JP2019097386A - Charging system for terminal, charging method and power supply adaptor - Google Patents

Abstract

To provide a charging system for a terminal capable of reducing volume of an adaptor, a charging method and a power supply adaptor.SOLUTION: A charging system for a terminal is provided with: a power supply adaptor 1 having a first rectification unit, a switch unit, a transformer, a second rectification unit, a first charge interface, a sampling unit, and a control unit which makes voltage of a third pulse waveform output by the second rectification unit satisfy a charge request by outputting a control signal to a switch unit, and adjusting duty ratio of the control signal on the basis of a voltage sample value and/or a current sample value sampled by the sampling unit; and a terminal 2 having a second charge interface and a battery.SELECTED DRAWING: Figure 2B

Description

  The present invention relates to the technical field of terminal equipment, and more particularly to a charging system for a terminal, a charging method for a terminal, and a power adapter.

  Currently, mobile terminals (e.g., smart phones) are increasingly popular with consumers, but need to be constantly charged because they consume more power.

  Usually, the mobile terminal is charged by the power adapter. The power supply adapter generally includes an initial rectification circuit, an initial filter circuit, a transformer, a next stage rectification circuit, a next stage filter circuit, a control circuit, etc., and is a stable low voltage that requires the mobile terminal to input 220 V AC. Charging to the mobile terminal is realized by converting it into direct current (for example, 5 V) and providing it to the power management device and battery of the mobile terminal.

  However, as the power of the power adapter is greatly increased from 5 W to 10 W, 15 W, 25 W, etc., many electronic parts that can withstand high power and can be controlled with high precision are required. Therefore, the volume of the power supply adapter is increased, and the production cost and production difficulty of the adapter are also increased.

  Embodiments of the present invention provide a charging system, a power adapter and a charging method for a terminal capable of reducing the volume of the adapter.

The present application is obtained by the inventor recognizing or studying the following problems.
The inventor found that the following was found in the research: When the power of the power adapter increases, the resistance of the battery's polarization tends to increase when the battery of the mobile terminal is charged by the power adapter. It is relatively noticeable, shortening the service life of the battery and affecting the reliability and safety of the battery.

  Usually, when powered by an AC power supply, many devices can not operate using AC directly. The cause is, for example, when the power is supplied by an alternating current such as 50 Hz 220 V city power, the power energy is supplied intermittently, but if it is desired to continuously supply, it is necessary to store the energy with an electrolytic capacitor. When the feed is in the valley of the waves, it must rely on energy storage by the electrolytic capacitor to maintain a stable power energy supply. Therefore, when the mobile terminal is charged by the power adapter, AC power is usually supplied to the mobile terminal after converting the supplied AC such as 220 V into a stable DC. In addition, since the power adapter indirectly charges the mobile terminal by charging the battery of the mobile terminal, it is possible to guarantee continuous power feeding by the battery. In such a power supply adapter, there is no need to continuously output a stable direct current when charging the battery.

  Therefore, one object of the present invention is to provide a charging system for a terminal capable of realizing miniaturization of the power supply adapter and low cost.

  The two objects of the present invention provide a power adapter, and the three objects of the present invention provide a charging method for a terminal.

  In order to achieve at least one of the above-mentioned objects, an embodiment of the first aspect of the present invention outputs a voltage of a first pulse waveform by rectifying an input alternating current in a charging process. A rectifier unit, a switch unit and a transformer generating an output voltage of the power adapter by receiving the voltage of the first pulse waveform outputted by the first rectifier unit and coupling it to the next stage; And a terminal for receiving an output voltage of the power adapter and charging a battery in the terminal.

In the embodiment of the present invention, the power adapter is not provided with the liquid aluminum electrolytic capacitor for rectification at the first stage, and the voltage of the first pulse waveform generated after rectification is directly injected to the switch unit and transformer. The volume of the adapter can be reduced. In addition, since the first-stage liquid aluminum electrolytic capacitor has a relatively short service life and is easily ruptured, by not installing it, the service life and safety of the adapter can be greatly enhanced.

  In order to achieve at least one of the above-mentioned objects, an embodiment of the second aspect of the present invention outputs a voltage of a first pulse waveform by rectifying an input alternating current in a charging process. A rectifier unit, a switch unit and a transformer generating an output voltage of the power adapter by receiving the voltage of the first pulse waveform outputted by the first rectifier unit and coupling it to the next stage; Providing a power adapter comprising:

In the embodiment of the present invention, the power adapter is not provided with the liquid aluminum electrolytic capacitor for rectification at the first stage, and the voltage of the first pulse waveform generated after rectification is directly injected to the switch unit and transformer. The volume of the adapter can be reduced. In addition, since the first-stage liquid aluminum electrolytic capacitor has a relatively short service life and is easily ruptured, by not installing it, the service life and safety of the adapter can be greatly enhanced.

  In order to achieve at least one of the above-mentioned objects, an embodiment of the third aspect of the present invention comprises the steps of: rectifying the input alternating current and outputting a voltage of a first pulse waveform in a charging process; Generating the output voltage of the power adapter by receiving the voltage of the first pulse waveform output by the first rectification unit and coupling it to the next stage, and providing a charging method for a terminal Do.

In the embodiment of the present invention, the power adapter is not provided with the liquid aluminum electrolytic capacitor for rectification at the first stage, and the voltage of the first pulse waveform generated after rectification is directly injected to the switch unit and transformer. The volume of the adapter can be reduced. In addition, since the first-stage liquid aluminum electrolytic capacitor has a relatively short service life and is easily ruptured, by not installing it, the service life and safety of the adapter can be greatly enhanced.

FIG. 1A is a block schematic diagram of using a flyback switch power supply for a charging system for a terminal according to one embodiment of the present invention. FIG. 1B is a block schematic diagram of using a forward switching power supply for a charging system for a terminal according to one embodiment of the present invention. FIG. 1C is a block schematic diagram of using a push-pull switch power supply for a charging system for a terminal according to one embodiment of the present invention. FIG. 1D is a block schematic diagram of using a semi-bridged switch power supply for a charging system for a terminal according to one embodiment of the present invention. FIG. 1E is a block schematic diagram of using a full bridge switch power supply for a charging system for a terminal according to one embodiment of the present invention. FIG. 2A is a block schematic diagram of a charging system for a terminal according to an embodiment of the present invention. FIG. 2B is a block schematic diagram of a charging system for a terminal according to an embodiment of the present invention. FIG. 3 is a waveform diagram of the charging voltage output to the battery by the power adapter in the embodiment of the present invention. FIG. 4 is a waveform diagram of the charging current output to the battery by the power adapter in the embodiment of the present invention. FIG. 5 is a schematic view of a control signal output to the switch unit according to the embodiment of the present invention. FIG. 6 is a schematic view of a rapid charging process in an embodiment of the present invention. FIG. 7A is a block schematic diagram of a charging system for a terminal according to an embodiment of the present invention. FIG. 7B is a block schematic diagram of a power supply adapter with LC filter circuit according to an embodiment of the present invention. FIG. 8 is a block schematic diagram of a charging system for a terminal according to another embodiment of the present invention. FIG. 9 is a block schematic diagram of a charging system for a terminal according to another embodiment of the present invention. FIG. 10 is a block schematic diagram of a charging system for a terminal according to another embodiment of the present invention. FIG. 11 is a block schematic diagram of a sampling unit according to one embodiment of the present invention. FIG. 12 is a block schematic diagram of a charging system for a terminal according to another embodiment of the present invention. FIG. 13 is a block schematic diagram of a terminal according to one embodiment of the present invention. FIG. 14 is a block schematic diagram of a terminal according to another embodiment of the present invention. FIG. 15 is a flowchart of a charging method for a terminal according to an embodiment of the present invention. 16A and 16B are schematic diagrams of pulse waveforms according to an embodiment of the present invention.

  Embodiments of the present invention will be described in detail with reference to the drawings. Note that the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are used to interpret the present invention and are not understood as not limiting the present invention.

  Before describing a charging system, a charging method, and a power supply adapter for a terminal according to an embodiment of the present invention, in the related art, a power supply adapter for charging a device to be charged which is a terminal will be described. It is described as ".

  The associated adapter operates in constant voltage mode and the output voltage is approximately constant at 5V, 9V, 12V or 20V.

  The voltage output by the related adapter is not directly applied to both ends of the battery, but is converted by a conversion circuit in the device to be charged (for example, terminal) to convert the voltage in the device to be charged (for example, terminal) Obtain the desired charging voltage and / or charging current of the battery. The charging current may be direct current.

  The converter circuit converts the voltage output by the associated adapter to meet the desired charging voltage and / or charging current requirements of the battery.

  As an example, the conversion circuit may refer to a charge management module such as a charge IC in the terminal, which manages the charge voltage and / or charge current of the battery in the battery charging process. Since the conversion circuit has the function of the voltage feedback module and / or the function of the current feedback module, it can manage the charging voltage and / or the charging current of the battery.

  For example, the battery charging process may include at least one of a trickle charging stage, a constant current charging stage and a constant voltage charging stage. In the trickle charge phase, the conversion circuit converts the current that entered the cell in the trickle charge phase by the current feedback loop into the desired charge current of the cell (eg, the first charge current). In the constant current charging step, the conversion circuit converts the current input to the battery in the constant current charging step into a desired charging current of the battery by the current feedback loop (for example, the second charging current, the second charging current It may be larger than one charging current). In the constant voltage charging stage, the conversion circuit is such that the voltage applied across the battery in the constant voltage charging stage by the current feedback loop meets the desired charging voltage of the battery.

  For example, if the voltage output by the associated adapter is greater than the desired charge voltage of the battery, the conversion circuit performs a step-down conversion on the voltage output by the associated adapter so that the charge voltage after step-down is the desired charge of the battery. It becomes a voltage. In addition, if the voltage output by the related adapter is smaller than the desired charge voltage of the battery, the conversion circuit performs boost conversion on the voltage output by the related adapter to ensure that the charge voltage after boosting is the desired charge of the battery. It becomes a voltage.

  When the related adapter outputs a constant voltage of 5 V, the conversion circuit (for example, Buck step-down circuit) when the battery includes a single cell (a lithium battery cell is taken as an example and the charge termination voltage of the single cell is 4.2 V) 2.) performs step-down conversion on the voltage output by the related adapter, so that the charge voltage after step-down becomes the desired charge voltage of the battery.

  When the related adapter outputs a constant voltage of 5 V, a battery in which two or more single cells are connected in series (the lithium battery cell is taken as an example, and the charge termination voltage of the single cell is 4.) When charged to 2 V), the conversion circuit (for example, Boost boost circuit) performs boost conversion on the voltage output by the related adapter to make the charged voltage after boosting the desired charge voltage of the battery. Become.

  In the conversion circuit, the electrical energy of the unconverted part is not in the form of heat due to the reduction in circuit conversion efficiency, and the heat of the part is concentrated inside the charged device (eg, terminal). The design space and heat dissipation space of the terminal (for example, the terminal) are all very small (for example, the mobile terminal used by the user is lighter and thinner in physical size, and the mobile terminal functions to be enhanced. (Large number of electronic components are lined up so that there is no gap), so the difficulty of designing the conversion circuit is increased, and at the same time the heat concentrated in the device to be There is a possibility that an abnormality may occur in the device to be charged (for example, a terminal).

  For example, heat that is concentrated in the conversion circuit can cause thermal interference to the electronic components near the conversion circuit, which can cause abnormal operation of the electronic components and / or, for example, in the conversion circuit The concentrated heat may shorten the useful life of the converter circuit and the electronic components in the vicinity, and / or, for example, the heat concentrated in the converter circuit may cause thermal interference in the battery and thus the battery's malfunction. Charge and discharge may occur, and / or, for example, heat concentrated in the conversion circuit may raise the temperature of the device to be charged (eg, the terminal) and affect the use experience when the user charges And / or, for example, heat concentrated in the converter circuit may lead to a short circuit of the converter circuit itself, so that the voltage output by the relevant adapter is applied directly across the battery It is cause abnormal charge which, when the battery is in a state of charging by the overvoltage for a long time, there is a possibility of explosion, there is a safety hazard.

  The power adapter according to an embodiment of the present invention acquires battery state information including at least current electricity quantity information and / or voltage information of the battery, and adjusts the output voltage of the power adapter itself based on the acquired battery state information. To meet the desired charging voltage and / or charging current requirements of the battery. The battery is charged by applying a voltage adjusted by the power supply adapter directly to both ends of the battery (hereinafter, referred to as “directly charged”). In some embodiments, the output of the power adapter may be a pulsed voltage.

  The power adapter can manage the charging voltage and / or charging current of the battery by having the function of the voltage feedback module and the function of the current feedback module.

  The power adapter adjusts its own output voltage based on the acquired battery state information by acquiring the battery state information in real time, and based on the acquired real time state information of the battery each time, To meet the desired charging voltage and / or charging current requirements of the battery.

  Adjusting the output voltage of the power adapter based on the status information of the battery acquired in real time is different time point of the power adapter in the charging process with the continuous increase of the charging voltage of the battery in the charging process. The current status information of the battery is acquired, and the output voltage of the battery is adjusted in real time on the basis of the current status information of the battery, which means that the requirement of the charging voltage and / or the charging current desired for the battery is satisfied. The output voltage regulated by the power adapter can be applied directly across the battery to charge the battery.

    For example, the battery charging process may include at least one of a trickle charging stage, a constant current charging stage and a constant voltage charging stage. In the trickle charge phase, the power adapter may output a first charging current to charge the battery to meet the desired charging current requirements of the battery (in some embodiments, the first The charging current may be a pulse waveform current). In the constant current charging phase, the power adapter can be made to output current from the power adapter in the constant current charging phase and enter the battery to meet the desired charging current requirements of the battery by means of a current feedback loop (e.g. The second charging current may also be a pulse current or may be larger than the first charging current, and the current peak value of the pulse waveform of the constant current charging phase is the current peak of the pulse waveform of the trickle charging phase Although larger than the value, the constant current in the constant current charging step means that the current peak value or the average value of the pulse waveform does not substantially change). In the constant voltage charging stage, the power adapter uses a voltage feedback loop to keep the voltage (ie, the voltage of the pulse waveform) output from the power adapter to the device to be charged (eg, terminal) in the constant voltage charging stage. Keep it to the value.

  The power adapter described in the embodiments of the present invention is mainly used in the constant current charging stage of the battery in the device to be charged (for example, terminal). Also in the other embodiments, the control function of the trickle charge stage and the constant voltage charge stage of the battery in the device to be charged (for example, terminal) is the same as that for the power adapter according to the embodiment of the present invention. Complete in cooperation with the special charging chip in). The battery has a relatively small charging power in the trickle charging stage and the constant voltage charging stage compared to the constant current charging stage, and the range in which the conversion efficiency loss and the heat accumulation of the charging chip inside the device to be charged (for example, terminal) can be allowed. It is in. The constant current charging step and the constant current step described in the embodiments of the present invention mean a charging mode for controlling the output current of the power adapter, and the output current of the power adapter does not change at all, for example, general In fact, the current peak value or the average value of the pulse waveform output by the power adapter may not change substantially, or may not change in a certain time zone. For example, in practice, the power adapter usually uses a method of partially charging with constant current at the constant current charging stage.

  Multi-stage constant current charging has N (N is an integer of 2 or more) constant current stages, and starts the initial stage charging at a predetermined charging current, and N The current peak value or average value of the pulse waveform is reduced when the first constant current step to the (N-1) step from the first constant current step to the next constant current step is sequentially performed. Enters the next constant current phase when the voltage threshold for charge termination is reached. The current conversion process of two adjacent constant current stages may change gradually, or may be a stepwise skip change.

  Also, the “terminal” in the embodiment of the present invention is a wired line (Public Switched Telephone Network (PSTN), digital subscriber line (DSL), digital cable, direct cable connection and / or another data connection / Internet) Connected and / or wireless interface (eg, a honeycomb network, a wireless LAN (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM radio transmitter and / or another communication terminal) May include an apparatus for receiving / transmitting a communication signal. A terminal that communicates via a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" and / or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or honeycomb telephones, and may incorporate a honeycomb radio telephone and a personal communication system (PCS) terminal capable of data processing, fax and data communication, such as a radio telephone, pager, Other electronic devices may be included, including internet / intranet access, web browsers, notebooks, calendars and / or GPS receiver PDAs and popular knee and / or hand-held receivers or wireless telephone receivers.

  Further, in the embodiment of the present invention, when the voltage of the pulse waveform outputted by the power adapter is directly applied to the battery of the terminal to charge the battery, the charging current shows a pulse waveform of a half cycle sine wave, The battery is charged and its cycle changes with the alternating current input, that is, it changes with the frequency of the AC power line, for example, the frequency corresponding to the cycle is an integral multiple or reciprocal multiple of the power line It is. Also, when the charging current is intermittently charged to the battery, the corresponding current waveform is formed by one or a set of pulses synchronized with the power line.

  In the process of charging a battery according to an embodiment of the present invention (for example, at least one of trickle charging stage, constant current charging stage and constant voltage charging stage), direct current (change in direction) of pulse output by power adapter Without change, width changes with time), alternating current (both direction and width change with time) or direct current (ie constant DC, direction and width with time) Can be received).

  The first stage of the related adapter comprises a plurality of liquid aluminum electrolytic capacitors with the following disadvantages: First, the volume of the adapter is relatively large because the volume is relatively large. The second and normal shape is a cylinder, and the area of the cylinder occupied in the circuit board is large, which makes it difficult to wire the entire circuit board inside the adapter. Third, because there is a working life, there is also a working life of the adapter. Fourth, there is a safety problem with the adapter, as there is the possibility of explosion, and when it explodes, the electrolyte, which is a conductor, is released.

  In order to solve at least one of the above mentioned problems, as shown in FIG. 2A, an embodiment of the present invention provides a charging system for a terminal comprising a power adapter 1 and a terminal 2.

  The power supply adapter 1 includes a first rectification unit 101, a switch unit 102, and a transformer 103.

  The first rectification unit 101 rectifies the input alternating current and outputs a voltage of a first pulse waveform in the charging process.

  The switch unit 102 and the transformer 103 generate the output voltage of the power adapter 1 by receiving the voltage of the first pulse waveform outputted by the first rectification unit and coupling it to the next stage.

  The terminal 2 receives the output voltage of the power adapter, and charges the battery 202 in the terminal based on the received output voltage of the power adapter.

In the embodiment of the present invention, the power adapter is not provided with the liquid aluminum electrolytic capacitor for rectification at the first stage, and the voltage of the first pulse waveform generated after rectification is directly injected to the switch unit and transformer. The volume of the adapter can be reduced. In addition, since the first-stage liquid aluminum electrolytic capacitor has a relatively short service life and is easily ruptured, the use life and safety of the adapter can be greatly enhanced by not installing it.

  “The switch unit 102 and the transformer 103 generate the output voltage of the power supply adapter 1 by receiving the voltage of the first pulse waveform and coupling it to the next stage” in the above-mentioned contents. The voltage obtained after being coupled is not the output voltage of the power adapter 1. In general, after the voltage of the first stage is coupled to the next stage, it is necessary to perform the process of the next stage to generate the output voltage of the power supply adapter 1. In the embodiment of the present invention, the method of processing the voltage coupled to the next stage is not specifically limited. For example, the voltage coupled to the next stage is rectified to output the output voltage of the power adapter 1. The output voltage of the power adapter 1 is acquired by rectifying and filtering the voltage acquired or coupled to the next stage.

  The switch unit 102 is mainly used for discontinuous waves, and the transformer 103 is mainly used for coupling the energy of the first stage to the next stage. Thus, the switch unit 102 and the transformer 103 are collectively referred to as a discontinuous wave and energy coupling unit or as an energy transfer unit. Specifically, the switch unit 102 modulates the voltage of the first pulse waveform based on the control signal, and the transformer 103 calculates the voltage of the second pulse waveform based on the voltage of the first pulse waveform after modulation. Output

  The voltage of the one or more pulse waveforms described in the embodiments of the present invention may be a positive pulse waveform (e.g., a first pulse waveform), and a pulse waveform of alternating plus and minus (e.g. Two pulse waveforms may be used. Also, specifically, one or more pulse waveforms in the embodiment of the present invention are pulse waveforms when viewed from the macro or the whole, but when viewed from the micro, the pulse waveform may continuously change. , And may change discontinuously. For example, the voltage of the second pulse waveform and the voltage of the third pulse waveform are voltages obtained after the processing of the discontinuous wave is performed by the switch unit 102, and if the filtration processing of the next stage is not performed, From the micro point of view, it consists of many small discrete pulses, but from the whole point of view, the waveform of the voltage must be a pulse waveform. Therefore, in the embodiment of the present invention, such a pulse waveform as viewed from the whole or macro is also called a pulse waveform. That is, the voltage of one or more pulse waveforms described in the embodiments of the present invention may indicate that the envelope of the voltage is a pulse waveform. Also, the one or more pulse waveforms described in the embodiments of the present invention may be complete pulse waveforms or pulse waveforms after being deglitched. For example, the peak value of the voltage of the third pulse waveform may be a complete pulse waveform as shown in FIG. 16A, or may be a pulse waveform after deglitching as shown in FIG. 16B. . Also, in the charging process, the voltage across the battery has a clamping action on the voltage of the pulse waveform, and one or more pulse waveforms in the embodiment of the present invention mean a pulse waveform formed after being clamped ((1) FIG. 3 shows a specific waveform).

  The next stage of the power supply adapter 1 may include a second rectification unit (second rectification unit 104 in FIG. 2B). In some embodiments, the current output by the second rectification unit may be output directly as the output current of the power adapter 1. In some other embodiments, various waveform conversions are performed on the current waveform or the envelope of the current waveform output by the second rectification unit, and the current obtained after the waveform conversion is the power adapter 1 Output current. For example, after the voltage waveform / current waveform output by the second rectification unit is converted into a square wave, a triangular wave, or the like, a square wave current or a triangular wave current is output. The method of changing the current waveform may be many, for example, by installing a member such as a switch or a capacitor behind the second rectification unit, the shape of the current waveform output by the second rectification unit is Change.

  Similarly, the voltage output by the second rectification unit may be directly used as the output voltage of the power supply adapter 1, and various conversions are performed on the voltage waveform or the envelope of the voltage waveform output by the second rectification unit. The voltage obtained after waveform conversion may be used as the output voltage of the power supply adapter 1. Although it will be described later by way of example that the power supply adapter 1 outputs the voltage of the third pulse waveform, the embodiment of the present invention is not limited to this.

  Hereinafter, a charging system for a terminal, a power adapter, and a charging method for the terminal according to an embodiment of the present invention will be described with reference to FIGS. 1A to 14.

  As shown in FIGS. 1A to 14, a charging system for a terminal according to an embodiment of the present invention includes a power adapter 1 and a terminal 2.

  As shown in FIG. 2B, the power supply adapter 1 includes a first rectification unit 101, a switch unit 102, a transformer 103, a second rectification unit 104, a first charge interface 105, and a sampling unit 106. And a control unit 107. The first rectifying unit 101 rectifies the input alternating current (for example, AC 220 V) and outputs a voltage of a first pulse waveform such as a half cycle sine wave voltage, as shown in FIG. It may be a full bridge rectifier circuit consisting of two diodes. The switch unit 102 may modulate the voltage of the first pulse waveform based on the control signal and may be configured by a MOS transistor, and performs half cycle sine wave by performing PWM (Pulse Width Modulation) control on the MOS transistor. Modulate the discontinuous wave to the voltage of. The transformer 103 outputs a voltage of a second pulse waveform based on the voltage of the first pulse waveform after modulation. The second rectification unit 104 rectifies the voltage of the second pulse waveform and outputs a voltage of a third pulse waveform, and may be a diode or a MOS transistor, and performs synchronous rectification of the next stage. The third pulse waveform and the first pulse waveform after modulation are synchronized. Specifically, that the third pulse waveform and the first pulse waveform after modulation are synchronous means that the phases of the two are synchronous and that the changing tendencies due to the widths of the two are the same. . The first charging interface 105 is connected to the second rectifying unit 104. The sampling unit 106 samples the voltage and / or current output by the second rectification unit 104 to obtain a voltage sample value and / or a current sample value. The control unit 107 is connected to each of the sampling unit 106 and the switch unit 102, outputs a control signal to the switch unit 102, and adjusts the duty ratio of the control signal based on the voltage sample value and / or the current sample value. The voltage of the third pulse waveform output by the second rectification unit 104 satisfies the charging requirement.

  As shown in FIG. 2B, the terminal 2 includes a second charging interface 201 and a battery 202. The second charge interface 201 and the battery 202 are connected, and when the second charge interface 201 is connected to the first charge interface 105, the voltage of the third pulse waveform is applied to the battery 202, The battery 202 is charged.

  In one embodiment of the present invention, as shown in FIG. 1A, the power adapter 1 may use a flyback switch power supply. Specifically, the transformer 103 includes a first-stage winding and a second-stage winding, one end of the first-stage winding is connected to the first output terminal of the first rectification unit 101, and Two output terminals are grounded, and the other end of the first stage winding is connected to the switch unit 102 (for example, if the switch unit 102 is a MOS transistor, the other end of the first stage winding is connected to the drain of the MOS transistor And the transformer 103 outputs a voltage of a second pulse waveform based on the voltage of the first pulse waveform after modulation.

  The transformer 103 is a high frequency transformer, and its operating frequency may be 50 kHz to 2 MHz. The high frequency transformer couples the voltage of the first pulse waveform after modulation to the next stage, and outputs the voltage through the next stage winding. In the embodiment of the present invention, miniaturization of the power supply adapter 1 is realized because the volume of the high frequency transformer is smaller than the volume of the low frequency transformer.

  In one embodiment of the present invention, as shown in FIG. 1B, the power adapter 1 may also use a forward switch power supply. Specifically, the transformer 103 includes a first winding, a second winding, and a third winding, and the first winding has a terminal of the same name that is a reverse diode and the first winding of the first rectifying unit 101 The second output terminal is connected, the terminal of the different name is connected to the terminal of the same name of the second winding, and then the first output terminal of the first rectification unit 101 is connected, and the second winding has a different name. A terminal connects to the switch unit 102 and a third winding connects to the second rectifying unit 104. The reverse diode plays the role of reverse glitch removal, and the induced electromotive force generated in the first winding is subjected to amplitude limitation with respect to the back electromotive force by the reverse diode, and the energy of the amplitude limitation is converted to the first rectification unit The magnetic field generated by the current flowing through the first winding causes a reverse magnetic field to the iron core of the transformer, and the magnetic field strength at the iron core of the transformer is initially Return to the state. The transformer 103 outputs a voltage of a second pulse waveform based on the voltage of the first pulse waveform after modulation.

  In one embodiment of the present invention, as shown in FIG. 1C, the power adapter 1 may also use a push-pull switch power supply. Specifically, the transformer includes a first winding, a second winding, a third winding, and a fourth winding, and the first winding has a terminal of the same name connected to the switch unit Terminals of different names are connected to terminals of the same name of the second winding, and then connected to a first output terminal of the first rectifying unit, and the terminals of the second winding are terminals of the switch The third winding is connected to the unit, the terminal of the same name is connected to the terminal of the same name of the fourth winding, and the transformer is connected to the second pulse based on the voltage of the first pulse waveform after modulation. Output voltage of pulse waveform.

  As shown in FIG. 1C, the switch unit 102 includes a first MOS transistor Q1 and a second MOS transistor Q2, and the transformer 103 includes a first winding, a second winding, and a third winding. And the fourth winding, the first winding has its terminal connected to the drain of the second MOS transistor Q2 of the switch unit 102, and the other terminal connected to the terminal of the second winding having the same name. The connection point between the terminal of the first winding and the terminal of the second winding is connected to the first output terminal of the first rectifier unit 101, and the second winding has the same name. Terminal is connected to the drain of the first MOS transistor Q1 of the switch unit 102, and the drain of the first MOS transistor Q1 and the drain of the second MOS transistor Q2 are connected. To the output terminal The second winding connects the terminal of the same name to the first input terminal of the second rectifier unit 104, and the third winding connects the terminal of the same name to the terminal of the fourth winding. The connection point between the terminal of the third winding and the terminal of the fourth winding is grounded, and the terminal of the fourth winding is the second input terminal of the second rectifying unit 104. Connect to

  As shown in FIG. 1C, in the second rectification unit 104, the first input terminal is connected to the terminal of the same name of the third winding, and the second input terminal is connected to the terminal of the fourth winding. The voltage of the second pulse waveform is rectified to output the voltage of the third pulse waveform, and may include two diodes, wherein the anode of one diode is connected to the terminal of the same name of the third winding, The anode of the other diode is connected to the alias terminal of the fourth winding, and the cathodes of the two diodes are connected.

  In one embodiment of the present invention, as shown in FIG. 1D, the power adapter 1 may also use a semi-bridged switch power supply. Specifically, the switch unit 102 includes a first MOS transistor Q1, a second MOS transistor Q2, a first capacitor C1, and a second capacitor C2, and the first capacitor C1 is The first MOS transistor Q 1 is connected in series to the second capacitor C 2 and then connected in parallel to the output terminal of the first rectification unit 101, and the first MOS transistor Q 1 is connected in series to the second MOS transistor Q 2. Connected in parallel to the output terminal, the transformer 103 comprises a first winding, a second winding and a third winding, and the terminal of the same name of the first winding is connected in series with a first capacitor C1 connected in series The other terminal of the first winding is connected to the connection point between the second capacitor C2 and the connection point between the first MOS transistor Q1 and the second MOS transistor Q2 connected in series. The second winding is grounded after the terminal of the same name is connected to the first input terminal of the second rectifier unit 104 and the terminal of the same name is connected to the terminal of the same name of the third winding. The different terminal of the winding is connected to the second input terminal of the second rectifying unit 104. The transformer 103 outputs a voltage of a second pulse waveform based on the voltage of the first pulse waveform after modulation.

  In one embodiment of the present invention, as shown in FIG. 1E, the power adapter 1 may also use a full bridge switch power supply. Specifically, the switch unit 102 includes a first MOS transistor Q1, a second MOS transistor Q2, a third MOS transistor Q3, and a fourth MOS transistor Q4, and the third MOS transistor Q3. Is connected in series to the fourth MOS transistor Q4 and then connected in parallel to the output terminal of the first rectification unit 101, and the first MOS transistor Q1 is connected in series to the second MOS transistor Q2 The transformer 103 includes a first winding, a second winding, and a third winding, and the terminals of the same name of the first winding are connected in series. The first MOS transistor connected in series is connected to the connection point between the three MOS transistors Q3 and the fourth MOS transistor Q4, and the terminals of the first winding with different names are connected in series. The second winding has a terminal of the same name connected to the first input terminal of the second rectification unit 104 and a terminal of the same name connected to the third winding of the second MOS transistor Q2. After connecting to the terminal of the same name of the winding, it is grounded, and the terminal of the third winding is connected to the second input terminal of the second rectifying unit 104. The transformer 103 outputs a voltage of a second pulse waveform based on the voltage of the first pulse waveform after modulation.

  Therefore, in the embodiment of the present invention, the power adapter 1 uses any one of a flyback type switch power supply, a forward type switch power supply, a push-pull type switch power supply, a semi bridge type switch power supply and a full bridge type switch power supply. Output a pulse waveform voltage.

  Further, as shown in FIG. 1A, the second rectification unit 104 is connected to the winding of the next stage of the transformer 103, rectifies the voltage of the second pulse waveform, and outputs the voltage of the third pulse waveform. The third pulse waveform and the first pulse waveform after modulation are synchronized by forming a diode and performing synchronous rectification in the next stage. When the third pulse waveform is in synchronization with the first pulse waveform after modulation, it means that the phases of the two are synchronous, and the change tendencies due to the widths of the two are the same. The first charging interface 105 is connected to the second rectifying unit 104. The sampling unit 106 samples the voltage and / or current output by the second rectification unit 104 to obtain a voltage sample value and / or a current sample value. The control unit 107 is connected to each of the sampling unit 106 and the switch unit 102, outputs a control signal to the switch unit 102, and adjusts the duty ratio of the control signal based on the voltage sample value and / or the current sample value. The voltage of the third pulse waveform output by the second rectification unit 104 satisfies the charging requirement.

  As shown in FIG. 1A, the terminal 2 includes a second charge interface 201 and a battery 202, the second charge interface 201 and the battery 202 are connected, and the second charge interface 201 is a first charge interface. When connected to 105, the second charging interface 201 charges the battery 202 by applying the voltage of the third pulse waveform to the battery 202.

  The fact that the voltage of the third pulse waveform satisfies the charging requirement means that the voltage and current of the third pulse waveform satisfy the charging voltage and the charging current when the battery is charged. That is, the control unit 107 adjusts the duty ratio of a control signal such as PWM based on the sampled voltage and / or current output from the power adapter, and adjusts the output of the second rectification unit 104 in real time, Implement closed loop regulation control. Thus, the voltage of the third pulse waveform meets the charging requirements of the terminal 2 to ensure that the battery 202 is safe and efficiently charged. Specifically, as shown in FIG. 3, the charge voltage waveform output to the battery 202 is adjusted by the duty ratio of the PWM signal, and as shown in FIG. 4, it is output to the battery 202 by the duty ratio of the PWM signal. Adjust the charging current waveform.

  When adjusting the duty ratio of the PWM signal, an adjustment instruction is generated based on the voltage sample value, the current sample value or the voltage sample value, and the current sample value.

  Therefore, in the embodiment of the present invention, by controlling the switch unit 102, the PWM discontinuous wave is modulated with respect to the voltage of the half cycle sine wave which is the voltage of the first pulse waveform after rectification, and the high frequency transformer The high frequency transformer is coupled from the first stage to the next stage, and after synchronous rectification, it is returned to a half cycle sine wave voltage / current and sent directly to a current to rapidly charge the battery. Since the voltage width of the half cycle sine wave can be adjusted by the duty ratio of the PWM signal, the output of the power adapter can meet the charge requirement of the battery. As can be seen from the figure, the power adapter according to the embodiment of the present invention charges the battery with a half cycle sine wave voltage without installing electrolytic capacitors in the first and second stages, thereby reducing the volume of the power adapter. Can be realized, and the cost can be significantly reduced.

  In one specific example of the present invention, the control unit 107 may be an MCU (Micro Controller Unit, micro control processor), that is, has a switch drive control function, a synchronous rectification function, and a voltage / current adjustment control function. It may be a microprocessor.

  In one embodiment of the present invention, the control unit 107 adjusts the frequency of the control signal based on the voltage sample value and / or the current sample value, that is, outputs after continuing to output the PWM signal to the switch unit 102 to some extent. And stop at a predetermined time, and control to output the PWM signal again. Therefore, since the battery is charged intermittently, the safety problem due to the heat generated when continuously charging the battery can be avoided, and the reliability and safety of charging the battery can be enhanced.

  With regard to lithium batteries, under low temperature conditions, their ability to conduct ions and electrons is reduced, which tends to increase polarization in the charging process, but in the case of continuous charging, such polarization is more pronounced and lithium precipitation The possibility of this phenomenon will increase, which will affect the safety performance of the battery. In addition, continuous charging causes accumulation of heat due to charging, and the temperature inside the battery rises all the time, and when the temperature exceeds a certain value, the battery performance can not be exhibited well, which causes a safety problem. Will increase.

  In the embodiment of the present invention, by adjusting the frequency of the control signal, the power adapter is intermittently output, that is, when the battery charging process is introduced into the battery charging process, continuous charging is performed. The phenomenon of lithium precipitation that occurs is mitigated, the influence of heat accumulation is reduced, the effect of high temperature is obtained, and the reliability and safety of charging the battery can be ensured.

  As for the control signal output to the switch unit 102, as shown in FIG. 5, the output is stopped after continuing outputting the PWM signal to some extent, and the PWM signal is output again to some extent. Therefore, the control signal output to the switch unit 102 is intermittent, and the frequency can be adjusted.

  As shown in FIG. 1A, the control unit 107 is connected to the first charging interface 105 and communicates with the terminal 2 through the first charging interface 105 to acquire state information of the terminal 2. The duty ratio of a control signal, such as a PWM signal, is adjusted based on terminal state information, voltage sample values and / or current sample values.

  The state information of the terminal may include the amount of electricity of the battery, the temperature of the battery, the voltage of the terminal, the interface information of the terminal, the information of the path impedance of the terminal, and the like.

  Specifically, the first charging interface 105 includes a power supply line for charging the battery and a data line for communicating with the terminal. If the second charging interface 201 is connected to the first charging interface 105, the power adapter can send a communication query instruction to the terminal 2 with each other, and upon receiving a corresponding response instruction, the communication connection between the two can be established. Therefore, the control unit 107 acquires the state information of the terminal 2 and consults the terminal 2 on the charging mode and charging parameters (for example, charging current, charging voltage) to control the charging process.

The charging mode supported by the power adapter and / or terminal includes a normal charging mode and a rapid charging mode. The charge rate of the fast charge mode is faster than the charge rate of the normal charge mode (eg, the charge current of the fast charge mode is greater than the charge current of the normal charge mode). Generally, in the normal charging mode, the rated output voltage is 5 V, the rated output current is 2.5 or less, and D + and D− of the data line of the output interface of the power adapter may be shorted. However, the quick charge mode in the embodiment of the present invention is different. The power adapter communicates with the terminal using data lines D + and D- to exchange data, ie, the power adapter sends quick charging instructions to each other with the terminal and sends quick charging query instructions to the terminal, After receiving the quick charge response instruction from the terminal, the terminal's state information is obtained based on the terminal's response instruction to start the quick charge mode. Note that the charging current in the quick charging mode may be larger than 2.5 A, for example, may be 4.5 V, or may be larger. In the embodiment of the present invention, there is no specific limitation on the normal charge mode, and the power adapter supports two charge modes, and the charge rate (or current) of one of the charge modes is A charge mode that is faster than the charge rate of another charge mode and has a relatively slow charge rate may be understood as a normal charge mode.
The control unit 107 determines the charge mode including the normal charge mode and the quick charge mode by communication between the first charge interface 105 and the terminal 2.

  Specifically, the power adapter is connected to a terminal through an interface of Universal Serial Bus (USB), and the USB interface may be a normal USB interface or a micro USB interface. It is good. The data line of the first charging interface, which is the data line of the USB interface, is used for bi-directional communication between the power adapter and the terminal, and may be D + line and / or D- line of the USB interface . Two-way communication means that so-called power supply adapter and terminal exchange information with each other.

  The power adapter performs bi-directional communication with the terminal through the data line of the USB interface, thereby deciding to charge the terminal in the quick charge mode.

  The power adapter only connects to the terminal and does not charge it in the process of consulting with the terminal whether to charge the terminal in the quick charge mode. The terminal may be charged in the normal charging mode or may be charged with a small current, and embodiments of the present invention do not limit these.

  The power adapter adjusts the charge current to the charge current corresponding to the quick charge mode, charges the terminal, and determines to charge the terminal in the quick charge mode, and then directly charges the charge current to the quick charge mode The current may be adjusted or the terminal may be consulted to determine the charging current corresponding to the fast charge mode. For example, the charging current corresponding to the rapid charging mode is determined based on the current amount of electricity of the terminal battery.

  In the embodiment of the present invention, the power adapter performs two-way communication with the terminal and consults whether to use the quick charge mode, instead of blindly increasing the output current and charging rapidly. Compared to the prior art, the safety of the quick charge process can be enhanced.

  Preferably, when the control unit 107 performs two-way communication with the terminal through the data line of the first charge interface and decides to charge the terminal in the quick charge mode, the fast charge mode is turned on The first instruction for asking the terminal whether to be sent is sent to the terminal, and the first instruction response instruction is received from the terminal to indicate that the terminal agrees to turn on the quick charge mode. .

  Preferably, in one embodiment, the control unit charges the terminal with the power adapter in the normal charging mode, and confirms that the length of charging time in the normal charging mode is greater than a predetermined threshold. Send the first instruction to the terminal.

  The power adapter may determine that the terminal is already recognized as the power adapter after the length of the charging time in the normal charging mode is confirmed to be larger than the predetermined threshold, and may start the rapid inquiry communication. Please understand.

  Preferably, in one embodiment, the power adapter sends the first instruction to the terminal when it is determined that the charging current at or above a predetermined current threshold will charge for longer than a predetermined time.

  Preferably, in one embodiment, the control unit controls the power supply adapter to adjust the charge current to the charge current corresponding to the quick charge mode by controlling the switch unit, and the rapid Before charging the terminal with the charging current corresponding to the charging mode, the charging voltage corresponding to the rapid charging mode is determined by performing bi-directional communication with the terminal via the data line of the first charging interface. And controlling the power adapter to adjust a charge voltage to a charge voltage corresponding to the quick charge mode.

  Preferably, in one embodiment, the control unit determines the charge voltage corresponding to the quick charge mode by performing bi-directional communication with the terminal through the data line of the first charge interface. When the terminal sends a second instruction to the terminal asking if it is appropriate for the current output voltage of the power adapter to be the charging voltage of the fast charge mode, the current of the power adapter sent from the terminal And a second instruction response instruction to indicate that the output voltage of the circuit is appropriate, slightly higher or slightly lower, and the charge voltage of the quick charge mode is determined based on the second instruction response instruction.

  Preferably, in one embodiment, before the control unit controls the power adapter to adjust the charge current to the charge current corresponding to the quick charge mode, the data line of the first charge interface is used. In order to determine the charge current corresponding to the quick charge mode by performing bi-directional communication with the terminal via

  Preferably, in one embodiment, the control unit determines the charge current corresponding to the quick charge mode by performing bi-directional communication with the terminal through the data line of the first charge interface. When the third instruction for asking the maximum charging current that the terminal currently supports is sent to the terminal and the third sent by the terminal for indicating the maximum charging current that the terminal currently supports And the charge current of the quick charge mode is determined based on the response instruction of the third instruction.

  The power supply adapter may set the maximum charging current directly to the charging current in the rapid charging mode, or may set the charging current to one current value smaller than the maximum charging current.

  Preferably, in one embodiment, in the process of charging the terminal by the power adapter in the quick charge mode, the control unit is bidirectional with the terminal via the data line of the first charging interface. By performing communication, the switch unit is controlled to continue adjusting the charging current output to the battery by the power adapter.

  The power supply adapter continues to adjust the charging current output to the battery by continuing to inquire the current state information of the terminal such as the battery voltage of the terminal and the battery electric quantity.

  Preferably, in one embodiment, the control unit controls the switch unit by performing bidirectional communication with the terminal through the data line of the first charging interface to control the battery by the power adapter. Sending a fourth instruction to the terminal to ask for the current voltage of the battery in the terminal while continuing to adjust the charging current output to the terminal, and the current voltage of the battery in the terminal sent by the terminal A response instruction of a fourth instruction to indicate is received, and the charge current output from the power adapter to the battery is adjusted by controlling the switch unit based on the current voltage of the battery.

  Preferably, in one embodiment, the control unit controls the switch unit based on the correspondence relationship between a current voltage of the battery and a predetermined voltage value of the battery and a charging current value, and the power adapter converts the battery into a battery. The output charging current is adjusted to a charging current value corresponding to the current voltage of the battery.

  Specifically, the power supply adapter may store in advance the correspondence between the voltage value of the battery and the charging current value, and by performing bidirectional communication with the terminal via the data line of the first charging interface. The correspondence between the voltage value of the battery stored in the terminal and the charging current value may be acquired from the terminal.

  Preferably, in one embodiment, in the process of charging the terminal by the power adapter in the quick charge mode, the control unit is bidirectional with the terminal via the data line of the first charging interface. By performing communication, it is confirmed whether there is contact failure due to the first charge interface and the second charge interface, and if it is confirmed that there is a contact failure, the power adapter is set to the rapid charge mode. Control the termination.

  Preferably, in one embodiment, before the control unit determines whether there is a contact failure due to the first charging interface and the second charging interface, the control unit controls the path from the terminal to the terminal. A fourth instruction to the terminal to receive information indicative of the impedance and to query the terminal for the voltage of the battery in the terminal; and a fourth instruction for indicating the voltage of the battery in the terminal sent by the terminal And determining the path impedance from the power adapter to the battery based on the output voltage of the power adapter and the voltage of the battery, the path impedance from the power adapter to the battery, and the path impedance of the terminal And charging time between the power adapter and the terminal Based on the path impedance, to determine whether the defective contact by the first charging interface and the second charging interface is present.

  For a terminal, the path impedance may be recorded in advance. For example, since the terminals of the same standard have the same structure, the path impedance of the terminal is set to the same value at the time of shipment. Similarly, the power adapter may pre-record the passage impedance of the charging line, and if the voltage across the battery of the terminal is obtained, the voltage drop across the battery from the power adapter and the current in the passage will The path impedance is determined, and if the path impedance of the entire path> the path impedance of the terminal + the path impedance of the charging line, or the path impedance of the entire path− (the path impedance of the end + the path impedance of the charging line)> the impedance threshold It may be determined that there is a contact failure due to the first charging interface and the second charging interface.

  Preferably, in one embodiment, a fifth instruction indicating that contact failure due to the first charge interface and the second charge interface is present before the power adapter exits the quick charge mode. To the terminal.

  When the power adapter sends a fifth instruction, it terminates or resets the fast charge mode.

  The quick charge process of the embodiment of the present invention has been described in detail from the angle of the power adapter. The quick charge process of the embodiment of the present invention will be described in detail from the angle of the terminal.

  The power adapter and terminal interaction, related features, functions, etc. described from the angle of the terminal correspond to the description from the power adapter, and duplicate contents are appropriately omitted for the sake of brevity.

  As shown in FIG. 13, in one embodiment of the present invention, the terminal 2 includes a charge control switch 203 and a controller 204, and the charge control switch 203 is a second charge switch circuit composed of an electronic switch device. Since it is connected between the interface 201 and the battery 202 and turns on or off the process of charging the battery 202 under the control of the controller 204, it controls the process of charging the battery 202 from the terminal and charges the battery 202. Security and reliability can be guaranteed.

  As shown in FIG. 14, the terminal 2 establishes bi-directional communication between the controller 204 and the control unit 107 by means of the second charging interface 201 and the first charging interface 105. That is, the terminal 2 performs bi-directional communication with the power adapter 1 and the data line of the USB interface, supports the normal charging mode and the rapid charging mode, and the charging current of the rapid charging mode is larger than the charging current of the normal charging mode . When the communication unit 205 and the control unit 107 perform bi-directional communication, the power supply adapter 1 decides to charge the terminal 2 in the quick charge mode. Therefore, the control unit 107 controls the power supply adapter 1 to output the charging current corresponding to the quick charge mode, and charges the battery 202 in the terminal 2.

  In the embodiment of the present invention, the power adapter 1 performs bi-directional communication with the terminal and consults whether to use the quick charge mode, instead of blindly increasing the output current for quick charging. Therefore, the safety of the rapid charging process can be enhanced as compared to the prior art.

  Preferably, in one embodiment, the controller receives, by the communication unit, a first instruction sent from the control unit to inquire whether the terminal turns on the quick charge mode. The communication unit sends a response instruction of a first instruction to indicate that the terminal agrees to turn on the quick charge mode.

  Preferably, in one embodiment, the controller charges the battery in the terminal in the normal charging mode by the power adapter before receiving the first instruction sent from the control unit by the communication unit. The control unit sends the first instruction to the communication unit in the terminal when the control unit confirms that the charging time in the normal charging mode is longer than a predetermined threshold, and the controller is sent from the control unit by the communication unit. Receive the first instruction.

  Preferably, in one embodiment, before the power adapter outputs a charge current corresponding to the quick charge mode to charge a battery in the terminal, the controller includes a communication unit and the control unit. By performing two-way communication, the power adapter determines the charging voltage corresponding to the quick charging mode.

  Preferably, in one embodiment, the controller is configured to ask whether it is appropriate that the current output voltage of the power adapter sent from the control unit be the charging voltage of the quick charge mode. A second instruction is received and a second instruction response instruction is sent to the control unit indicating that the current output voltage of the power adapter is appropriate, slightly higher or slightly lower.

  Preferably, in one embodiment, bi-directional communication between the controller and the control unit causes the power adapter to determine a charging current corresponding to the fast charge mode.

  The controller receives a third instruction sent from the control unit to ask for the maximum charging current currently supported by the terminal and to indicate the maximum charging current currently supported by the battery in the terminal. By sending a response instruction of the third instruction to the control unit, the power adapter determines the charging current corresponding to the quick charging mode based on the maximum charging current.

  Preferably, in one embodiment, in the quick charge mode, in the process of charging the terminal by the power adapter, the power adapter performs bi-directional communication between the controller and the control unit. Keep adjusting the charging current output to the battery.

  The controller receives a fourth instruction sent from the control unit for inquiring the current voltage of the battery in the terminal, and responds to the fourth instruction indicating the current voltage of the battery in the terminal. By sending to the control unit, the power adapter continues to adjust the charging current that it outputs to the battery based on the current voltage of the battery.

  Preferably, in one embodiment, in the process of charging the terminal by the power adapter in the quick charge mode, the controller performs bidirectional communication between the communication unit and the control unit. And confirm whether there is a contact failure due to the first charging interface and the second charging interface.

The controller receives a fourth instruction sent from the control unit for inquiring the current voltage of the battery in the terminal, and responds to the fourth instruction indicating the current voltage of the battery in the terminal. By sending to the control unit
The control unit determines whether there is a contact failure due to the first charging interface and the second charging interface based on the output voltage of the power adapter and the current voltage of the battery.

  Preferably, in one embodiment, the controller receives a fifth instruction sent from the control unit to indicate a contact failure due to the first charging interface and the second charging interface.

  In order to turn on and use the quick charge mode, the power adapter and the terminal adopt a quick charge communication process, and one or more handshaking is established to realize the quick charge of the battery. The quick charge communication process and the steps included in the fast charge process according to an embodiment of the present invention will be described in detail with reference to FIG. The communication steps or operations illustrated in FIG. 6 are merely examples, and embodiments of the present invention may include other operations or variations of the operations of FIG. Further, each step in FIG. 6 may be performed in an order different from the order shown in FIG. 6, and not all the operations in FIG. 6 may be performed. The curve in FIG. 6 shows the change tendency of the peak value or the average value of the charging current, and is not the curve of the actual charging current.

As shown in FIG. 6, the rapid charging process includes five stages.
Stage 1 is as follows.
After the terminal and the power supply are connected, the terminal detects the type of the power supply on the data lines D + and D−, and if it is detected that the power supply is the power adapter, the current absorbed by the terminal May be larger than a predetermined current threshold I2 (for example, 1A). If the power supply adapter detects that its output current is I2 or more within a predetermined time (for example, continuous time T1), it determines that the type identification to identify the type of the power supply device has already been completed by the terminal. , Instruction 1 (corresponding to the first instruction) for asking whether the adapter and terminal handshaking communication is turned on and the terminal turns on the fast charge mode (also referred to as flash charge) send.
When the power adapter receives a response instruction to indicate that the terminal does not agree to turn on the fast charge mode, it detects its own output current again, and the output current of the power adapter is within a predetermined continuous time (for example, If the terminal is still I2 or more, which is still T1), ask again whether the terminal turns on the fast charge mode, and until the terminal agrees to turn on the fast charge mode, or the power adapter's Repeat the above step 1 step until the condition that the output current is not less than 12 is not satisfied.
When the terminal agrees to turn on the fast charge mode, the quick charge process starts and enters phase 2 of the quick charge communication process.

Stage 2 is as follows.
The half-period sinusoidal voltage output by the power adapter includes multiple categories. The power adapter has an instruction 2 (corresponding to the second instruction) for asking the terminal whether the output voltage matches the current voltage of the battery (or whether it is appropriate as a charging voltage in the fast charge mode). Send to the terminal, ie ask if it meets the requirement for charging.
If the terminal responds that the output voltage of the power adapter is somewhat high or low or matching, then the power adapter receives a feedback from the terminal that the output voltage of the adapter is slightly high or low from the terminal, the control unit generates a PWM signal The output voltage of the power adapter is adjusted with one adjustment by adjusting the duty ratio of D. The instruction 2 is sent to the terminal again, and the terminal is again asked if the output voltage of the power adapter matches.
If the output voltage of the power adapter is in matching matching, repeat step 2 until the terminal responds.

Stage 3 is as follows.
When the power adapter receives from the terminal a feedback that the output voltage of the power adapter matches, it sends instruction 3 (corresponding to the third instruction) to the terminal to ask for the maximum charging current that the terminal currently supports. The terminal enters phase 4 when it responds to the power adapter with the maximum charging current value currently supported.

Stage 4 is as follows.
The power adapter sets its output current reference value when it receives a feedback from the terminal that it has responded for the maximum charging current it currently supports. The control unit 107 adjusts the duty ratio of the PWM signal based on the current reference value, and enters the constant current phase when the output current of the power adapter meets the requirement of the charging current for charging the terminal. Here, the constant current stage means that the peak value or the average value of the output current of the power adapter does not substantially change (that is, the change range of the output current peak value or the average value is very small, for example, the output current) Peak value or average value changes within 5%). That is, the current peak value of the third pulse waveform maintains a constant value for each cycle.

Stage 5 is as follows.
Once in the constant current phase, the power adapter sends an instruction 4 (corresponding to the fourth instruction 4) to ask for the current voltage of the battery of the terminal each time a certain length of time has elapsed. The terminal also footbacks the current voltage of the terminal's battery to the power adapter, and the power adapter is a USB contact with the first charging interface and the second charging, based on the feedback regarding the current voltage of the terminal's battery It is determined whether contact by the interface is good and whether it is necessary to lower the current charging current value of the terminal. If the power adapter determines that the USB contact is not good, it sends an instruction 5 (corresponding to the fifth instruction) and then resets and enters phase 1 again.

  Preferably, in step 1 of some embodiments, the terminal responds to instruction 1 and the data corresponding to instruction 1 is used in step 5 to determine if USB contact is good. It may include path impedance data (or information).

  Preferably, in step 2 of some embodiments, the time from when the terminal agrees to turn on the fast charge mode to when the power adapter adjusts the voltage to an appropriate value is controlled within a certain range. If the time exceeds the predetermined range, the terminal determines that the request is abnormal and immediately resets.

  Preferably, in step 3 of some embodiments, the terminal is powered when the output voltage of the power adapter is adjusted to .DELTA.V (.DELTA.V is about 200-500 mV) higher than the current voltage of the battery. Send a feedback to the power adapter that the adapter's output voltage is appropriate or matching. When the terminal sends a feedback to the power adapter that the output voltage of the power adapter is not appropriate (ie, slightly higher or slightly lower), the control unit 107 adjusts the duty ratio of the PWM signal based on the voltage sample value. , Adjust the output voltage of the power adapter.

  Preferably, in step 4 of some embodiments, the speed at which the output current value of the power adapter is adjusted is controlled within a certain range, so that the adjustment speed is too fast and the rapid charging is abnormal and interrupted. You can avoid doing it.

  Preferably, in step 5 of some embodiments, it may be regarded as a constant current step if the change width of the output current value of the power adapter is controlled within 5%.

  Preferably, in step 5 of some embodiments, the impedance of the charging circuit is monitored in real time, ie the charging circuit by measuring the output voltage of the power adapter, the current charging current and the battery voltage of the read terminal. Monitor the overall impedance. If it is detected that charging circuit impedance> terminal path impedance + rapid charging data line impedance, it is determined that the USB contact is defective, and the rapid charging is reset.

  Preferably, in some embodiments, after the quick charge mode is turned on, the rapid charging is reset by controlling the communication time interval between the power adapter and the terminal within a certain range. It can be avoided.

  Preferably, in some embodiments, the shut down for the fast charge mode (or fast charge process) is a recoverable shut down and a non-recoverable shut down.

  If the terminal detects that the battery is full or USB contact failure, it stops and resets the fast charge, enters phase 1, does not agree to turn on the fast charge mode, and It does not enter stage 2. The outage for this fast charge process may be an unrecoverable outage.

  Also, in the communication between the terminal and the power adapter, if an abnormality occurs, the rapid charging is stopped and reset, and phase 1 is entered, and if the phase 1 requirement is satisfied, the terminal turns on the rapid charging mode Agree to resume the quick charge process. The outage for the quick charge process here may be a recoverable outage.

  In addition, when the terminal detects that the battery has an abnormality, it stops and resets the quick charge, enters Phase 1, and does not agree to turn on the fast charge mode. When the battery returns to normal and the requirements of phase 1 are satisfied, the terminal turns on the fast charge mode to resume the quick charge process. The outage for the quick charge process here may be a recoverable outage.

  The communication steps or operations shown in FIG. 6 above are merely examples. For example, in step 1, after the terminal is connected to the adapter, handshake communication between the terminal and the adapter is performed by the terminal, ie, the terminal is in the fast charge mode (also referred to as flash charge) of the power adapter. Send an instruction 1 to ask if to turn on and start the quick charge process when the power adapter receives a response instruction to agree to turn on the fast charge mode.

  The communication steps or operations shown in FIG. 6 above are merely examples. For example, after stage 5, it may further include a constant voltage charging stage. That is, in step 5, the terminal footbacks the current voltage of the terminal's battery to the power adapter, and when the terminal's battery voltage rises all the way to the constant voltage charging voltage threshold, the charging becomes a constant voltage charging stage And the control unit 107 adjusts the duty ratio of the PWM signal based on the voltage reference value (that is, the charging voltage threshold of the constant voltage) so that the output voltage of the power adapter is a request for the charging voltage of the terminal. Can be maintained, that is, substantially constant voltage can be maintained. In the constant voltage charging phase, when the charging current gradually decreases and falls to one threshold, it means that the charging is stopped and the battery is full. The constant voltage charging here means that the peak value of the third pulse waveform is almost unchanged.

  In the embodiment of the present invention, acquiring the output voltage of the power adapter means acquiring the peak value voltage or voltage average value of the third pulse waveform, and acquiring the output current of the power adapter , Means to obtain the peak value current or current average value of the third pulse waveform.

  In one embodiment of the present invention, as shown in FIG. 7A, the power supply adapter 1 further comprises a controllable switch 108 connected in series and a filter unit 109, the controllable switch 108 connected in series and the filter unit 109 , Connected to the first output terminal of the second rectification unit 104, the control unit 107 controls the turning on of the controllable switch 108 when the charging mode is determined to the normal charging mode, the charging mode is When the fast charge mode is decided, the control of turning off the controllable switch 108 is controlled. In addition, since one set or plural sets of small capacitors are connected in parallel to the output terminal of the second rectification unit 104, noise can be reduced and surge phenomenon can be reduced. Since an LC filter circuit or a π-type filter circuit is also connected to the output terminal of the second rectification unit 104, ripple interference can be eliminated. As shown in FIG. 7B, an LC filter circuit is connected to the output terminal of the second rectification unit 104. The capacitors in the LC filter circuit or the π-type filter circuit are all small capacitors and occupy a very small space.

  The filter unit 109 includes a filter capacitor capable of supporting 5 V reference charging, ie, corresponding to the normal charging mode. The controllable switch 108 may be configured by a semiconductor switch element such as a MOS transistor. When the power adapter charges the battery of the terminal in the normal charging mode (or also referred to as reference charging), the control unit 107 controls turning on the controllable switch 108 and the filter unit 109 is connected to the circuit And since the output of the second rectification unit is filtered, it can double as a direct current charging technology, that is, it realizes that the direct current is applied to the terminal battery to charge the battery with direct current. . In general, the filter unit comprises an electrolytic capacitor connected in parallel and a common capacitor (e.g. a solid capacitor) which is a small capacitor supporting a 5 V reference charge. Since the electrolytic capacitor occupies a relatively large volume, in order to reduce the size of the power adapter, it is sufficient to install one relatively small capacitor without installing the electrolytic capacitor in the power adapter. When the normal charge mode is used, the branch circuit where the small capacitor is located is controlled to conduct, the current is filtered, the stable output with small power is realized, the battery is charged with direct current, the fast charge mode is When used, the branch circuit where the small capacitor is located is controlled to shut off, the output of the second rectification unit 104 is not filtered, and the voltage / current of the pulse waveform is directly output and applied to the battery, Realize quick charge to the battery.

  In one embodiment of the present invention, the control unit 107 acquires the charging current and / or the charging voltage corresponding to the quick charge mode based on the state information of the terminal when the charge mode is determined to the quick charge mode, The duty ratio of a control signal such as a PWM signal is adjusted based on the charge current and / or the charge voltage corresponding to the fast charge mode. That is, when the current charge mode is determined to be the rapid charge mode, the control unit 107 acquires the battery voltage, the amount of electricity, the temperature, the operating parameters of the terminal, the electricity consumption information of the application program to be executed by the terminal, etc. Based on the state information, acquiring the charging current and / or the charging voltage corresponding to the quick charging mode, and adjusting the duty ratio of the control signal based on the acquired charging current and / or the charging voltage, the output of the power adapter To meet the charging requirements, to achieve rapid battery charging.

  The state information of the terminal includes the temperature of the battery. If the battery temperature is higher than the first predetermined temperature threshold or the battery temperature is lower than the second predetermined temperature threshold, if the current charge mode is the rapid charge mode, the rapid charge mode is switched to the normal charge mode, and The first predetermined temperature threshold is greater than the second predetermined temperature threshold. That is, if the battery temperature is too low (eg, less than the second predetermined temperature threshold) or too high (eg, greater than the first predetermined temperature threshold), it is not suitable for rapid charging, so It is necessary to switch the charging mode to the normal charging mode. In the embodiment of the present invention, the first predetermined temperature threshold and the second predetermined temperature threshold can be set or written in the memory of the control unit (for example, the power adapter MCU) based on the actual situation.

  In one embodiment of the present invention, the control unit 107 controls the switch unit 102 to turn off when the temperature of the battery is higher than a predetermined high temperature protection threshold, ie, the temperature of the battery exceeds the high temperature protection threshold. When the control unit 107 adopts high temperature protection strategy, control to turn off the switch unit 102, stop charging the battery by the power adapter, realize high temperature protection of the battery, charging safety Need to improve. The high temperature protection threshold may be different from or the same as the first temperature threshold. Preferably, the high temperature protection threshold is greater than the first temperature threshold.

  In another embodiment of the present invention, the controller obtains the temperature of the battery and controls the charge control switch to turn off if the temperature of the battery is greater than a predetermined high temperature protection threshold, ie, By turning off the charge control switch by the terminal, the battery charging process is stopped and the safety of charging is ensured.

  In one embodiment of the present invention, the control unit obtains the temperature of the first charging interface, and the switch unit is turned off when the temperature of the first charging interface is higher than a predetermined protection temperature. Control. That is, when the temperature of the charge interface exceeds a certain temperature, the control unit 107 adopts the high temperature protection strategy and controls the switch unit 102 to be turned off to charge the battery by the power adapter. It can be shut down to provide high temperature protection for the charging interface and enhance charging safety.

  Of course, in another embodiment of the present invention, the controller performs bi-directional communication with the control unit to obtain the temperature of the first charging interface, the temperature of the first charging interface being If the temperature is higher than the predetermined protection temperature, the charge control switch (see FIGS. 13 and 14) is controlled to be turned off, that is, the charge control switch is turned off by the terminal to stop the battery charging process. Ensure the safety of charging.

  Specifically, in one embodiment of the present invention, as shown in FIG. 8, the power supply adapter 1 further comprises a drive unit 110 such as a MOSFET driver. The drive unit 110 is connected between the switch unit 102 and the control unit 107, and drives the switch unit 102 on or off based on a control signal. In another embodiment of the present invention, the drive unit 110 may be integrated into the control unit 107.

  As shown in FIG. 8, the power supply adapter 1 is connected between the drive unit 110 and the control unit 107, and signal insulation of the first and second stages (or signal insulation of the first and second stages of the transformer 103). And a separation unit 111 for realizing the above. The separation unit 111 may use a light coupling insulation method or another insulation method. By installing the separation unit 111, the control unit 107 can be installed in the next stage of the power supply adapter 1 (or the next stage winding of the transformer 103), so that communication with the terminal 2 can be easily performed. The space design of the adapter 1 is simpler and more convenient.

  Naturally, in another embodiment of the present invention, both the control unit 107 and the drive unit 110 may be installed at the first stage, in which case the separation unit 111 is installed between the control unit 107 and the sampling unit 106. By doing this, it is possible to realize signal isolation between the first and second stages of the power adapter 1.

  In the embodiment of the present invention, when the control unit 107 is installed in the next stage, the separation unit 111 needs to be installed, but the separation unit 111 may also be integrated in the control unit 107. That is, when the signal is sent from the first stage to the next stage, or when the signal is sent from the next stage to the first stage, it is usually necessary to install a separation unit to isolate the signal.

  In one embodiment of the present invention, as shown in FIG. 9, the power supply adapter 1 includes an auxiliary winding for generating a voltage of a fourth pulse waveform based on the voltage of the first pulse waveform after modulation. A feed unit 112 (for example, a wave filter regulation module) for connecting to the auxiliary winding, converting the voltage of the fourth pulse waveform to output a direct current, and feeding each of the drive unit 110 and / or the control unit 107 , A voltage conversion module etc.). The feed unit 112 is constituted by a small capacitor of a wave filter, a member such as a regulation chip, processes and converts the voltage of the fourth pulse waveform, and outputs a low voltage direct current such as 3.3 V or 5 V Realize that.

  That is, the power supply of the drive unit 110 can be obtained by converting the voltage of the fourth pulse waveform by the power supply unit 112. When the control unit 107 is installed at the first stage, the power supply can be obtained by converting the voltage of the fourth pulse waveform by the power supply unit 112. As shown in FIG. 9, when the control unit 107 is installed in the first stage, the power supply unit 112 supplies power to each of the drive unit 110 and the control unit 107 by outputting DC in two paths. The optical coupling / decoupling unit 111 is provided between the control unit 107 and the sampling unit 106 to realize signal isolation between the first and second stages of the power adapter 1.

  When the control unit 107 is installed at the first stage and the drive unit 110 is integrated, the power supply unit 112 alone supplies power to the control unit 107. When the control unit 107 is installed in the next stage and the drive unit 110 is installed in the first stage, the feed unit 112 independently feeds power to the drive unit 110, and the control unit 107 is fed by the next stage, for example, 1 The voltage of the third pulse waveform output by the second rectification unit 104 is converted into a DC power supply and supplied with power by one power supply unit.

  Further, in the embodiment of the present invention, a plurality of small capacitors are connected in parallel to the output terminal of the first rectification unit 101 to play the role of a wave filter. Alternatively, an LC wave filter circuit is connected to the output terminal of the first rectification unit 101.

  In another embodiment of the present invention, as shown in FIG. 10, the power supply adapter 1 is connected to each of the auxiliary winding and control unit 107, detects the voltage of the fourth pulse waveform, and detects the voltage detection value. It further comprises a first voltage detection unit 113 for generating. The control unit 107 adjusts the duty ratio of the control signal based on the voltage detection value.

  That is, the control unit 107 reflects the voltage output by the second rectification unit 104 based on the voltage output from the auxiliary winding detected by the first voltage detection unit 113, and based on the voltage detection value. By adjusting the duty ratio of the control signal, the output of the second rectification unit 104 meets the charge requirement of the battery.

  Specifically, in one embodiment of the present invention, as shown in FIG. 11, the sampling unit 106 samples the current output by the second rectification unit 104 to obtain a current sample value. One current sample circuit 1061 and a first voltage sample circuit 1062 for sampling the voltage output by the second rectification unit 104 to obtain a voltage sample value.

  Preferably, the first current sample circuit 1061 is output by the second rectification unit 104 by sampling the voltage of a resistor (current detection resistance) connected to the first output terminal of the second rectification unit 104. Sampling current. The first voltage sample circuit 1062 samples the voltage between the first output terminal and the second output terminal of the second rectification unit 104 to obtain the voltage output by the second rectification unit 104. To sample.

  In one embodiment of the present invention, as shown in FIG. 11, a first voltage sampling circuit 1062 comprises a peak voltage sample storage unit for sampling and storing peak voltages of voltages of a third pulse waveform; A voltage by sampling the peak voltage of the peak voltage sample storage unit, a zero cross sampling unit that samples the zero cross point of the voltage of the third pulse waveform, a discharge unit that discharges the voltage of the peak voltage sample storage unit at the zero cross point, And an AD sampling unit for acquiring sample values.

  A peak voltage sample storage unit, a zero cross sampling unit, a discharge unit, and an AD sampling unit are provided in the first voltage sampling circuit 1062 to sample the voltage output by the second rectification unit 104 with high accuracy. To ensure synchronization between the voltage sample value and the voltage of the first pulse waveform, that is, the phase is synchronous, and the change tendency of the width is the same.

  In one embodiment of the present invention, as shown in FIG. 12, the power supply adapter 1 comprises a second voltage sample circuit 114 for sampling the voltage of the first pulse waveform and connecting it to the control unit 107. When the voltage value sampled by the second voltage sampling circuit 114 is larger than the first predetermined voltage value, the control unit 107 controls the switch unit 102 to start the first predetermined time, thereby performing the first operation. It discharges to the surge voltage of pulse waveform, peak voltage, etc.

  As shown in FIG. 12, the second voltage sampling circuit 114 samples the voltage of the first pulse waveform by connecting to the first output terminal and the second output terminal of the first rectification unit 101. . The control unit 107 determines the voltage value sampled by the second voltage sample circuit 114, and if the voltage value sampled by the second voltage sample circuit 114 is larger than the first predetermined voltage value, the power supply adapter 1 It means that a surge voltage is generated due to lightning interference, and it is necessary to discharge the surge voltage and to guarantee the safety and reliability of the charge. The control unit 107 controls the switch unit 102 to be turned on to a certain extent, a discharge path is formed, a surge voltage generated by lightning interference is discharged, and an influence by lightning interference generated when the terminal is charged by the power adapter. Can be prevented, and safety and reliability in charging the terminal can be effectively enhanced. The first predetermined voltage value can be determined based on the actual situation.

  In one embodiment of the present invention, in the process of charging the battery 202 of the terminal 2 by the power adapter, the control unit 107 switches the switch unit if the voltage value sampled by the sampling unit 106 is greater than the second predetermined voltage value. Control so that 102 is turned off. That is, the control unit 107 determines the voltage value sampled by the sampling unit 106, and when the voltage value is larger than the second predetermined voltage value, determines that the voltage output by the power supply adapter 1 is too high. The unit 102 is controlled to be turned off, and the charging of the battery 202 of the terminal 2 by the power adapter 1 is stopped. That is, by controlling the switch unit 102 to be turned off, the control unit 107 can realize the overvoltage protection of the power adapter 1 and guarantee the safety of charging.

  In one embodiment of the present invention, the controller 204 performs bi-directional communication with the control unit 107 to obtain a voltage value sampled by the sampling unit 106 (FIGS. 13 and 14), and the voltage If the value is larger than the second predetermined voltage value, the charge control switch 203 is controlled to be turned off, that is, the charge control switch 203 is turned off by the terminal 2 and the charge process to the battery 202 is stopped. Ensure the safety of charging.

  The control unit 107 controls the switch unit 102 to be turned off when the current value sampled by the sampling unit 106 is larger than the predetermined current value. That is, the control unit 107 determines the current value sampled by the sampling unit 106, and when the current value is larger than the predetermined current value, determines that the current output by the power supply adapter 1 is too large, and the switch unit 102 By controlling to turn off, the charging of the terminal by the power adapter 1 is stopped. That is, the control unit 107 controls the switch unit 102 to be turned off, thereby realizing the overcurrent protection of the power supply adapter 1 and ensuring the safety of charging.

  Similarly, the controller 204 performs bidirectional communication with the control unit 107 to obtain the current value sampled by the sampling unit 106 (FIGS. 13 and 14), and the current value is larger than a predetermined current value. The charging control switch 203 is controlled to be turned off, that is, the charging control switch 203 is turned off by the terminal 2, the charging process of the battery 202 is stopped, and the safety of charging is ensured.

  The second predetermined voltage value and the predetermined current value are both set in the memory of the control unit (for example, the control unit 107 of the power adapter 1 where the microcontroller MCU is one example) based on the actual situation. Can be written or written.

  In the embodiment of the present invention, the terminal may be a mobile terminal such as a mobile phone, a mobile power source such as a charge baby, a multimedia player, a node personal computer, a wearable device, or the like.

  In the charging system for the terminal according to the embodiment of the present invention, the voltage of the third pulse waveform is outputted by the power supply adapter, and the voltage of the third pulse waveform outputted by the power supply adapter is directly applied to the battery of the terminal. By controlling that, it is possible to realize the rapid charging directly to the battery by the output voltage / current of the pulse. In addition, the pulse output voltage / current changes periodically, so that the phenomenon of lithium precipitation of the lithium battery is reduced as compared with the conventional constant voltage and constant current, and the service life of the battery can be enhanced. In addition, the probability and strength of the arc at the touch point of the charge interface can be reduced, the life of the charge interface can be increased, the polarization effect of the battery is reduced, the charge speed is increased, the heat generation of the battery is reduced, and the terminal is charged Safety and reliability in doing so. In addition, it is the pulse waveform voltage that is output by the power adapter, and it is not necessary to install an electrolytic capacitor in the power adapter, so simplification and downsizing of the power adapter are realized, and the cost is greatly reduced. be able to.

Further, according to an embodiment of the present invention, there is provided a first rectifying unit for outputting a voltage of a first pulse waveform by rectifying an input alternating current, and a voltage of the first pulse waveform based on a control signal. A switch unit that modulates, and a transformer that outputs a voltage of a second pulse waveform based on the voltage of the first pulse waveform after modulation;
A second rectification unit that rectifies a voltage of the second pulse waveform and outputs a voltage of a third pulse waveform, and a second rectification unit connected to the second rectification unit and connected to the battery. When connected to the charging interface, the first charging interface for applying the voltage of the third pulse waveform to the battery of the terminal by the second charging interface, and the output by the second rectifying unit A sampling unit for obtaining a voltage sample value and / or a current sample value by sampling a voltage and / or a current, and connecting each of the sampling unit and the switch unit, the control signal to the switch unit Output, and based on the voltage sample value and / or the current sample value, By adjusting the duty ratio, the voltage of the third pulse waveform providing a power adapter and a control unit to satisfy the charge requirements of the terminal.

  In the power adapter of the embodiment of the present invention, the voltage of the third pulse waveform is output by the first charging interface, and the voltage of the third pulse waveform is directly transmitted to the battery of the terminal by the second charging interface of the terminal. The applied voltage realizes quick charging of the battery with the output voltage and / or current of the pulse. In addition, the pulse output voltage and / or current changes periodically, so that the phenomenon of lithium precipitation of the lithium battery is reduced as compared with the conventional constant voltage and constant current, and the service life of the battery can be enhanced. In addition, the probability and strength of the arc at the touch point of the charge interface can be reduced, the life of the charge interface can be increased, the polarization effect of the battery is reduced, the charge speed is increased, the heat generation of the battery is reduced, and the terminal is charged Safety and reliability in doing so. In addition, it is the voltage of the pulse waveform that is output by the power adapter, and there is no need to install an electrolytic capacitor, so simplification and miniaturization of the power adapter can be realized, and the cost is greatly reduced. be able to.

  Hereinafter, a method embodiment of the present invention that can be performed by the power adapter will be described. In addition, you may refer to the Example of each apparatus described to the above-mentioned description about the part which is not demonstrated in detail.

  A method of charging a terminal according to an embodiment of the present invention comprises, in the charging process, step 1 of rectifying an input alternating current and outputting a voltage of a first pulse waveform, and the first output of the first rectification unit Generating an output voltage of the power adapter by receiving a voltage of one pulse waveform and coupling it to the next stage.

In the embodiment of the present invention, the power adapter is not provided with the liquid aluminum electrolytic capacitor for rectification at the first stage, and the voltage of the first pulse waveform generated after rectification is directly injected to the switch unit and transformer. The volume of the adapter can be reduced. In addition, since the first-stage liquid aluminum electrolytic capacitor has a relatively short service life and is easily ruptured, the use life and safety of the adapter can be greatly enhanced by not installing it.

  Preferably, in some embodiments, step 1 performs primary rectification of the input AC when the first charging interface of the power adapter is connected to the second charging interface of the terminal. It may include outputting a voltage of one pulse waveform. Step 2 may include outputting the voltage of the second pulse waveform by modulating the voltage of the first pulse waveform by controlling the switch unit and converting the voltage by a transformer.

FIG. 15 is a flowchart of a charging method for a terminal according to an embodiment of the present invention. As shown in FIG. 15, when the first charging interface of the power adapter is connected to the second charging interface of the terminal, the charging method for the terminal performs primary rectification of the alternating current input to the power adapter when the first charging interface of the power adapter is connected to the second charging interface of the terminal. A voltage of a first pulse waveform output S1 and a control unit controlled to modulate the voltage of the first pulse waveform and converted by a transformer to output a voltage of a second pulse waveform S2. The voltage of the second rectified waveform is secondarily rectified to output the voltage of the third pulse waveform, and the voltage of the third pulse waveform is applied to the battery of the terminal by the second charging interface, thereby S3 for charging the battery, S4 for obtaining voltage sample value and / or current sample value by sampling voltage and / or current after secondary rectification, voltage sample value and / or By adjusting the duty ratio of the control signal of the switch unit based on the current sample value, and a S5, voltage of the third pulse waveform satisfies the requirements of the charge. In S1, the city power of alternating current (for example, city power such as 220 V, 50 Hz or 60 Hz) input by the first rectification unit of the power adapter is rectified, and the voltage of the first pulse waveform ( For example, it outputs a half cycle sine wave of 100 Hz or 120 Hz). In S2, the switch unit is formed of a MOS transistor, and performs PWM control on the MOS transistor to modulate the discontinuous wave with respect to the voltage of the half cycle sine wave. Then, the voltage of the first pulse waveform modulated by the transformer is coupled to the next stage, and the voltage of the second pulse waveform is output by the next stage winding. In the embodiment of the present invention, high-frequency transformer may be used for conversion, and the volume of the transformer may be very small, and a high-power, compact design of the power supply adapter can be realized. In S3, in one embodiment of the present invention, the voltage of the second pulse waveform is secondarily rectified by the second rectification unit configured by a diode or a MOS transistor to realize the next stage synchronous rectification, and modulation is performed. The later first pulse waveform and third pulse waveform become synchronized.

  In addition, that the voltage of the third pulse waveform satisfies the charging requirement means that the voltage and the current of the third pulse waveform need to satisfy the charging voltage and the charging current when the battery is charged. That is, the duty ratio of a control signal such as a PWM signal is adjusted based on the sampled voltage and / or current output from the power adapter, and the output of the power adapter is adjusted in real time to realize closed loop adjustment control. Thus, it is possible to ensure that the voltage of the third pulse waveform meets the charging requirements of the terminal and that the battery is charged safely and efficiently. Specifically, as shown in FIG. 3, the charging voltage waveform output to the battery is adjusted by the duty ratio of the PWM signal, and the charging current output to the battery by the duty ratio of the PWM signal as shown in FIG. Adjust the waveform.

  Therefore, in the embodiment of the present invention, the switch unit is controlled to perform discontinuous frequency modulation of PWM with respect to the voltage of the half cycle sine wave which is the voltage of the first pulse waveform after full bridge rectification. And coupled to the first stage to the next stage by a high frequency transformer, and after synchronous rectification is performed, it returns to a half cycle sine wave voltage / current and is sent directly to the battery of the terminal to realize quick charging of the battery. . The voltage width of the half cycle sine wave can be adjusted by the duty ratio of the PWM signal to realize that the output of the power adapter meets the charging requirements of the battery. Therefore, the battery can be directly charged by the voltage of a half cycle sine wave without installing an electrolytic capacitor in the first stage and the second stage of the power adapter, so that the volume of the power adapter can be reduced to realize miniaturization. The cost can be significantly reduced.

  In one embodiment of the present invention, the frequency of the control signal is adjusted based on the voltage sample value and / or the current sample value, that is, the output is stopped after continuing outputting the PWM signal output to the switch unit to some extent. By outputting the PWM signal again after the lapse of the predetermined time to stop, the voltage applied to the battery is intermittently realized to realize the intermittent charging of the battery and occurred when continuously charging the battery The safety problem due to heat generation can be avoided, and the reliability and safety of charging the battery can be enhanced. FIG. 5 shows control signals output to the switch unit.

  In addition, the charging method for the terminal communicates with the terminal via the first charging interface to acquire terminal state information, and is based on the terminal state information, the voltage sample value, and / or the current sample value. Adjust the duty ratio of the control signal.

  That is, when the second charging interface and the first charging interface are connected, the power adapter and the terminal mutually communicate with each other by sending a communication query instruction, and after receiving the corresponding response instruction, the communication connection can be established, the terminal Because the terminal can obtain information on the charging mode and charging parameters (eg, charging current, charging voltage), the terminal can control the charging process.

  In one embodiment of the present invention, the conversion by the transformer generates the voltage of the fourth pulse waveform, and the voltage of the fourth pulse waveform is detected to generate the voltage detection value, so based on the voltage detection value. Adjust the duty ratio of the control signal.

  Specifically, the transformer is further provided with an auxiliary winding for generating a voltage of a fourth pulse waveform based on the voltage of the first pulse waveform after modulation. Since the output voltage of the power supply adapter can be reflected by detecting the voltage of the fourth pulse waveform, the output of the power supply adapter of the battery is adjusted by adjusting the duty ratio of the control signal based on the voltage detection value. It can meet charging requirements.

  In one embodiment of the present invention, acquiring a voltage sample value by sampling a voltage after secondary rectification samples and stores a peak voltage of the voltage after secondary rectification; A peak voltage sample storage unit that samples the zero crossing point of the voltage after the next rectification and samples and stores the peak voltage at the zero crossing point is discharged to sample the peak voltage of the peak voltage sample storage unit. Including obtaining voltage sample values. Thus, the voltage output by the power adapter is accurately sampled, and it is ensured that the voltage sample value and the voltage of the first pulse waveform are synchronous, that is, the change tendency of the phase and the width is the same.

In the charging method for the terminal according to one embodiment of the present invention, when the voltage of the first pulse waveform is sampled, and the sampled voltage value is larger than a first predetermined voltage value, the switch unit is used. Controlling to start a first predetermined time to discharge a surge voltage of a first pulse waveform.

  The voltage of the first pulse waveform is sampled, the sampled voltage value is determined, and if the voltage value is larger than the first predetermined voltage value, the power adapter may be subjected to lightning interference to generate a surge voltage. As it means, it is necessary to discharge the surge voltage and to ensure the safety and reliability of the charge. When the control unit is controlled to turn on the switch unit to a certain extent, a discharge path is formed, the surge voltage generated by the lightning is discharged, and the influence by lightning interference is prevented when the terminal is charged by the power adapter. The safety and reliability of charging the battery can be effectively enhanced. The first predetermined voltage value can be determined based on the actual situation.

  In one embodiment of the present invention, communicating with the terminal through the first charging interface determines the charging mode including the rapid charging mode and the normal charging mode, and the charging mode is determined to be the rapid charging mode. In this case, the charge current and / or charge voltage corresponding to the quick charge mode is obtained based on the state information of the terminal, and the duty ratio of the control signal is adjusted based on the charge current and / or charge voltage corresponding to the fast charge mode. .

  When the current charge mode is determined to be the rapid charge mode, the rapid state is based on the acquired terminal state information such as battery voltage, electric quantity, temperature, terminal operation parameters, and electric consumption information of the application program executed by the terminal. By obtaining the charging current and / or the charging voltage corresponding to the charging mode, and adjusting the duty ratio of the control signal based on the obtained charging current and / or the charging voltage, the output of the power adapter meets the charging requirement, Realize quick charge to the battery.

  The state information of the terminal includes the temperature of the battery. Also, if the battery temperature is higher than the first predetermined temperature threshold or the battery temperature is lower than the second predetermined temperature threshold, if the current charging mode is the rapid charging mode, the rapid charging mode is the normal charging mode. And the first predetermined temperature threshold is greater than the second predetermined temperature threshold. That is, if the battery temperature is too low (eg, less than the second predetermined temperature threshold) or too high (eg, greater than the first predetermined temperature threshold), it is not suitable for rapid charging, so It is necessary to switch the charging mode to the normal charging mode. In the embodiment of the present invention, the first predetermined temperature threshold and the second predetermined temperature threshold can be determined based on the actual situation.

  In one embodiment of the present invention, the switch unit is controlled to be turned off when the temperature of the battery is higher than a predetermined high temperature protection threshold, ie, high temperature when the temperature of the battery exceeds the high temperature protection threshold. It is necessary to adopt a protection strategy, the switch unit is controlled to be turned off, the charging of the battery is stopped by the power adapter, the high temperature protection of the battery is realized, and the safety of charging is enhanced. The high temperature protection threshold may be different from or the same as the first temperature threshold. Preferably, the high temperature protection threshold is greater than the first temperature threshold.

  In another embodiment of the present invention, the terminal obtains the temperature of the battery and controls to stop charging the battery if the temperature of the battery is higher than a predetermined high temperature protection threshold, ie, By turning off the charge control switch by the terminal, the battery charging process is stopped and the safety of charging is ensured.

  Further, in another embodiment of the present invention, the charging method for the terminal acquires the temperature of the first charging interface, and the switch is configured if the temperature of the first charging interface is higher than a predetermined protection temperature. It further includes controlling the unit to turn off. That is, when the temperature of the charge interface exceeds a certain temperature, the control unit also needs to implement high temperature protection, and controls the switch unit to be turned off and stops the battery from being charged by the power adapter. So high temperature protection of the charging interface is realized and charging safety is enhanced.

  In the process of charging the battery by the power adapter, the switch unit is controlled to be turned off when the voltage sample value is larger than the second predetermined voltage value. That is, in the process of charging the battery by the power adapter, the voltage sample value is determined, and if the voltage sample value is larger than the second predetermined voltage value, it means that the voltage output by the power adapter is too high. By controlling the unit to be turned off, the charging of the battery by the power adapter is stopped, so the overvoltage protection of the power adapter can be realized, and the safety of charging can be ensured.

  In one embodiment of the present invention, the terminal obtains the voltage sample value by performing bi-directional communication with the power adapter through the second charging interface, and the voltage sample value is a second. Control to stop charging the battery if the voltage value is larger than the predetermined voltage value. That is, by turning off the charge control switch by the terminal, the charging process of the battery is stopped to ensure the safety of charging.

  In one embodiment of the present invention, in the process of charging a terminal by a power adapter, if the current sample value is larger than a predetermined current value, the switch unit is controlled to be turned off, that is, the terminal by the power adapter In the process of charging the current, determine the current sample value, and if the current sample value is larger than the predetermined current value, it means that the current output by the power adapter is too large, and control the switch unit to turn off Therefore, the charging of the terminal by the power adapter is stopped, so the overcurrent protection of the power adapter is realized, and the safety of charging is ensured.

  Similarly, the terminal acquires the current sample value by performing bi-directional communication with the power adapter via the second charging interface, and the battery is selected when the current sample value is larger than a predetermined current value. Control to stop charging. That is, by turning off the charge control switch by the terminal, the charging process of the battery is stopped to ensure the safety of charging.

  The second predetermined voltage value and the predetermined current value can both be determined based on the actual situation.

  In the embodiment of the present invention, the state information of the terminal includes the electric quantity of the battery, the temperature of the battery, the voltage / current of the terminal, the interface information of the terminal, the information of the path impedance of the terminal, and the like.

  Specifically, the power adapter is connected to a terminal through an interface of Universal Serial Bus (USB), and the USB interface may be a normal USB interface or a micro USB interface. It is good. The data line of the first charging interface, which is the data line of the USB interface, is used for bi-directional communication between the power adapter and the terminal, and may be D + line and / or D- line of the USB interface . Two-way communication means that so-called power supply adapter and terminal exchange information with each other.

  The power adapter performs bi-directional communication with the terminal via a data line of a USB interface to decide to charge the terminal in the quick charge mode.

  Preferably, in one embodiment, the power adapter decides to charge the terminal in the fast charge mode by performing bi-directional communication with the terminal via the first charging interface, A first instruction to the terminal to ask the terminal whether to turn on the fast charge mode and to indicate that the terminal agrees to turn on the quick charge mode An instruction response instruction is received from the terminal.

  Preferably, in one embodiment, the power adapter charges the terminal with the power adapter in the normal charging mode before sending the first instruction to the terminal, and the charging time of the normal charging mode is set. If it is determined that it is longer than a predetermined threshold, the power adapter sends the first instruction to the terminal.

  After the power adapter confirms that the charging time of the normal charging mode is greater than a predetermined threshold, it may be understood that the terminal has already recognized that the power adapter is the power adapter, and it may be understood that the rapid inquiry communication may be started. .

  Preferably, in one embodiment, controlling the switch unit controls the power adapter to adjust the charge current to the charge current corresponding to the quick charge mode, and corresponds to the quick charge mode. By performing bi-directional communication with the terminal via the first charging interface prior to charging the terminal with a charging current, the charging voltage corresponding to the fast charging mode is determined, and the power adapter determines the charging voltage. The adjustment to the charge voltage corresponding to the quick charge mode is controlled.

  Preferably, in one embodiment, the power adapter determines the charging voltage corresponding to the quick charge mode by performing bi-directional communication with the terminal through the first charge interface. A second instruction is sent to the terminal asking whether it is appropriate for the current output voltage to be the charging voltage for the fast charge mode, the current output voltage of the power adapter sent by the terminal being Receiving a response instruction of the second instruction to indicate appropriate, somewhat higher or slightly lower, and determining the charging voltage of the quick charge mode based on the response instruction of the second instruction.

  Preferably, in one embodiment, bi-directional communication with the terminal via the first charging interface before the power adapter controls adjusting the charging current to the charging current corresponding to the fast charge mode. Communication is performed to determine a charge current corresponding to the quick charge mode.

  Preferably, in one embodiment, the power adapter determines the charging current corresponding to the quick charge mode by performing bi-directional communication with the terminal through the first charge interface. A third instruction to the terminal asking for the maximum charging current it currently supports, and the third instruction sent by the terminal to indicate the maximum charging current the terminal currently supports Receiving a response instruction, and determining the charging current of the fast charge mode based on the response instruction of the third instruction.

  The power adapter may directly determine the maximum charging current as the charging current for the quick charge mode, or may set the charging current to one current value smaller than the maximum charging current.

  Preferably, in one embodiment, in the quick charge mode, in the process of charging the terminal by the power adapter, the switch is provided by performing bi-directional communication with the terminal via the first charging interface. The unit is controlled to continue adjusting the charging current output to the battery by the power adapter.

  The power supply adapter continues to adjust the charging current by continuing to inquire the terminal's current state information such as the terminal's battery voltage, battery electric charge, etc.

  Preferably, in one embodiment, the switch unit is controlled to adjust the charging current output to the battery by the power adapter by performing bi-directional communication with the terminal through the first charging interface. To continue, the power adapter sends a fourth instruction to the terminal to ask for the current voltage of the battery in the terminal to indicate the current voltage of the battery in the terminal sent by the terminal And adjusting the charge current by controlling the switch unit based on the current voltage of the battery.

  Preferably, in one embodiment, controlling the switch unit to adjust the charging current based on the current voltage of the battery may include: the current voltage of the battery and a predetermined voltage value of the battery and the charging current value And controlling the switch unit to adjust the charging current output to the battery by the power adapter to a charging current value corresponding to the current voltage of the battery based on the correspondence relationship of

  Specifically, the power adapter may store in advance the correspondence between the battery voltage value and the charging current value.

  Preferably, in one embodiment, in the quick charge mode, in the process of charging the terminal by the power adapter, the bi-directional communication with the terminal is performed through the first charging interface. It is checked whether there is a contact failure due to one charging interface and the second charging interface, and if it is confirmed that a contact failure exists, the power adapter controls the termination of the quick charge mode.

  Preferably, in one embodiment, the power adapter is configured to pass from the terminal to the terminal before it is confirmed whether there is contact failure due to the first charging interface and the second charging interface. A fourth instruction to the terminal to receive information indicative of the impedance and to query the terminal for the voltage of the battery in the terminal; and a fourth instruction for indicating the voltage of the battery in the terminal sent by the terminal And determining the path impedance from the power adapter to the battery based on the output voltage of the power adapter and the voltage of the battery, the path impedance from the power adapter to the battery, the path impedance of the terminal, and Charging circuit between the power adapter and the terminal Based on the path impedance, wherein a first charging interface second charging interface to see if a contact failure.

  Preferably, according to one embodiment, the first charging interface and the second charging interface show poor contact before the power adapter controls the termination of the quick charge mode. Send five instructions to the terminal.

  When the power adapter sends a fifth instruction, it terminates or resets the fast charge mode.

  The quick charge process of the embodiment of the present invention has been described in detail from the angle of the power adapter. The quick charge process of the embodiment of the present invention will be described in detail from the angle of the terminal.

  In the embodiment of the present invention, the terminal supports a normal charge mode and a rapid charge mode, and the charge current of the rapid charge mode is larger than the charge current of the normal charge mode. In addition, when the terminal performs bi-directional communication between the second charge interface and the power adapter, the power adapter decides to charge the terminal in the quick charge mode, and supports the quick charge mode. The battery in the terminal is charged by outputting the charging current.

  Preferably, in one embodiment, the terminal charges the terminal in the quick charge mode by the power adapter by performing bi-directional communication with the terminal through the second charging interface. To decide, the terminal receives a first instruction sent from the power adapter to ask the terminal whether to turn on the fast charge mode and the terminal turns on the fast charge mode. Sending a response instruction of a first instruction to indicate that the user agrees to the power adapter.

  Preferably, in one embodiment, the terminal is charged from the power adapter in the normal charge mode before the terminal receives the first instruction sent from the power adapter, and the power adapter charges the normal charge. After confirming that the charging time of the mode is greater than a predetermined threshold, the first instruction sent from the power adapter is received.

  Preferably, in one embodiment, the power adapter outputs based on a charge current corresponding to the quick charge mode, and the terminal charges the second charge before charging a battery in the terminal. By performing bi-directional communication with the terminal through an interface, the power adapter determines a charging voltage corresponding to the fast charging mode.

  Preferably, in one embodiment, the terminal determines a charge voltage corresponding to the quick charge mode by the power adapter by performing bi-directional communication with the power adapter through the second charge interface. The terminal receives a second instruction sent from the power adapter to ask whether it is appropriate for the current output voltage of the power adapter to be the charging voltage of the quick charge mode. And sending a response instruction of the second instruction to the power adapter to indicate that the current output voltage of the power adapter is appropriate, slightly higher or slightly lower.

  Preferably, in one embodiment, the terminal receives a charging current corresponding to the quick charge mode from the power adapter, and before the second battery is charged by the power adapter, the second terminal By performing bi-directional communication with the terminal through the charging interface, the charging current corresponding to the fast charging mode is determined.

  The terminal may determine the charging current corresponding to the quick charge mode by the power adapter by bi-directional communication between the terminal and the second one of the charging interfaces, the terminal being sent from the power adapter, By receiving a third instruction to ask for the maximum charging current that the terminal currently supports, and sending a response instruction of the third instruction to the power adapter to indicate the maximum charging current that the terminal currently supports The power adapter may include determining a charge current corresponding to the fast charge mode based on the maximum charge current.

  Preferably, in one embodiment, in the quick charge mode, in the process of charging the terminal by the power adapter, the terminal performs bi-directional communication with the power adapter through the second charging interface. Thus, the power adapter continues to adjust the charging current it outputs to the battery.

  The terminal continues to adjust the charging current output from the power adapter itself to the battery by performing bidirectional communication with the power adapter through the second charging interface, the terminal being the power source Receiving a fourth instruction sent from an adapter to inquire the current voltage of the battery in the terminal, and sending a response instruction of the fourth instruction to indicate the current voltage of the battery in the terminal to the power adapter And continuing adjusting the charging current output to the battery by the power adapter based on the current voltage of the battery.

  Preferably, in one embodiment, the power adapter performs bidirectional communication with the power adapter through the second charging interface in the process of charging the terminal in the quick charge mode. Check whether there is a contact failure due to the first charging interface and the second charging interface.

  The terminal checks whether there is a contact failure due to the first charging interface and the second charging interface by performing bi-directional communication with the power adapter via the second charging interface. And the terminal receives a fourth instruction sent from the power adapter to ask for the current voltage of the battery in the terminal, and a fourth instruction response instruction indicating the current voltage of the battery in the terminal To the power adapter, the power adapter determines, based on its output voltage and the current voltage of the battery, whether there is a contact failure due to the first charging interface and the second charging interface. Including confirmation.

  Preferably, in one embodiment, the terminal receives a fifth instruction sent from the power adapter to indicate contact failure due to the first charging interface and the second charging interface.

  In order to turn on and use the fast charge mode, the power adapter and the terminal adopt a fast charge communication process to achieve quick charge of the battery by establishing one or more handshaking. The quick charge communication process and the steps included in the fast charge process according to an embodiment of the present invention will be described in detail with reference to FIG. The communication steps or operations illustrated in FIG. 6 are merely examples, and embodiments of the present invention may include other operations or variations of the operations of FIG. Further, each step in FIG. 6 may be performed in an order different from the order shown in FIG. 6, and not all the operations in FIG. 6 may be performed.

  In the charging method for a terminal according to the embodiment of the present invention, the power adapter controls to output a voltage of a third pulse waveform satisfying a charging requirement, and the third pulse waveform output from the power adapter is output. The voltage is directly applied to the battery of the terminal to realize the rapid charging of the battery directly with the output voltage / current of the pulse waveform. The output voltage / current of the pulse waveform changes periodically, so that the phenomenon of lithium precipitation of the lithium battery is reduced compared to the traditional constant voltage and constant current, and the service life of the battery can be enhanced. In addition, the probability and strength of the arc at the touch point of the charge interface can be reduced, the life of the charge interface can be increased, the polarization effect of the battery is reduced, the charge speed is increased, the heat generation of the battery is reduced, and the terminal is charged Safety and reliability in doing so. In addition, it is the pulse waveform voltage that is output by the power adapter, and it is not necessary to install an electrolytic capacitor in the power adapter, so simplification and downsizing of the power adapter are realized, and the cost is greatly reduced. be able to.

  In the description of the present invention, the terms "center", "longitudinal direction", "lateral direction", "length", "width", "thickness", "upper" are used to explain the present invention intelligibly and simply. , "Lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" The direction or positional relationship indicated by “counterclockwise”, “axial direction”, “radial direction”, “circumferential direction” etc. is the direction or positional relationship shown in the drawing, and the device or element is specified in a specific direction, It is to be understood that the present invention is not limited as it does not imply or imply that it must have structure and operation in the direction of.

  Also, the terms "first" and "second" are used for the purpose of illustration only and are not understood to mean the number of technical features that indicate or imply or explain of relative importance. Thus, the "first" and "second" features explicitly or imply to include at least one such feature. In the description of the present invention, the meanings included in the “plurality” are at least two, for example, two, three, etc., unless there is an obvious specific limitation.

  In the present invention, the terms "attach", "connect to each other", "connect", "fix" etc. are to be understood in a broad sense, eg, fixed connections, except for obvious provisions and limitations. It may also be releasably connected, may be integral, may be mechanically connected, may be electrically connected, may be directly connected, The two members may be connected indirectly, or may be understood that the insides of the two members communicate or have an interaction relationship between the two members. Those skilled in the art may understand the specific meanings of the above mentioned terms of the present invention based on the specific situation.

  In the present invention, the first feature being "above" or "below" the second feature may be directly contacted with the first and second features, except as defined and limited. The first and second features may be contacted via something between the two. Also, the fact that the first feature is “above”, “above”, “on the top” of the second feature means that the first feature is directly above or diagonally above the second feature or the first feature is It means that the horizontal height of the feature is higher than the second feature. The fact that the first feature is "below", "below", "bottom" of the second feature means that the first feature is directly below or diagonally below the second feature or of the first feature It means that the horizontal height is lower than the second feature.

  In the description of the present specification, the descriptions of the terms “one embodiment”, “some embodiments”, “exemplary”, “specific examples” or “some examples” etc. It is meant that the specific features, structures, materials or features mentioned or exemplified by the embodiments are included in at least one embodiment or example of the invention. In the present specification, the meanings expressed in the above terms are not necessarily limited to the same example or example. Also, the specific features, structures, materials described can be combined in any suitable manner in one or more embodiments or examples. Also, unless inconsistent, one skilled in the art can combine the features of different embodiments or examples described herein and features of different embodiments or examples.

  Those skilled in the art can realize the steps of the units and algorithms of the respective examples described in the embodiments of the present invention by hardware or a combination of computer software and hardware. Whether these functions are implemented by hardware or software depends on the special application of the technical proposal and the design restrictions. A technician can implement the described functionality in different ways for each particular application, but such implementation is considered to be beyond the scope of the present invention.

  Of course, for the convenience and brevity of the description, those skilled in the art can refer to the corresponding process of the method embodiment for the specific operation process by the above described system, apparatus and unit. Here, I will not explain repeatedly.

  Of course, the systems, devices and methods in the several embodiments described herein may be implemented in other manners. The embodiment of the apparatus described in the above contents is merely illustrative, and the method by which the unit is partitioned is partitioned by theoretical functions, and in practice, other partition methods are also possible. For example, multiple units or installations may be combined or integrated into one other system, and some features may not be ignored or performed. Also, the coupling or direct coupling or communication connection described may be performed by several interfaces, and the indirect coupling or communication connection in the device or unit may be It may be done electrically, mechanically or otherwise.

  The unit described as the insulating member may or may not physically insulate. A member described as a unit may not be a physical unit, may be located at one place, and may be distributed to a plurality of network units. Based on actual needs, some or all of the units are selected to realize the purpose of this embodiment.

  Also, each functional unit of each embodiment of the present invention may be integrated into one processing unit, each unit may physically exist alone, and two or more units may be one. It may be integrated into a unit.

  When the functions are realized in the form of functional units as software and are sold or used as independent products, they may be stored in a computer readable storage medium. Based on such an understanding, the technical solution of the present invention may substantially indicate the part contributing to the prior art or the technical solution in the form of a software product, and the software product of the computer has one memory. It is stored in a medium, includes some instructions, and causes a computer to execute all or part of the steps of the method (which may be a personal computer, a server, a network facility, etc.) of each embodiment of the present invention. The storage medium may be a medium capable of storing various program codes such as a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk. Including.

  Although the foregoing has described embodiments of the present invention, these embodiments are merely illustrative and do not limit the present invention. Those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments without departing from the spirit and principle of the present invention.

Claims (136)

In the charging process, a first rectifying unit for outputting a voltage of a first pulse waveform by rectifying an input alternating current;
A power supply adapter having a switch unit and a transformer for generating an output voltage of the power supply adapter by receiving the voltage of the first pulse waveform outputted by the first rectification unit and coupling it to the next stage;
And a terminal for receiving an output voltage of the power adapter and charging a battery in the terminal with the output voltage of the power adapter.   The switch unit modulates the voltage of the first pulse waveform based on a control signal, and the transformer outputs a voltage of a second pulse waveform based on the voltage of the first pulse waveform after modulation. The charging system for a terminal according to claim 1, The power adapter is
A second rectification unit that outputs a voltage of a third pulse waveform by rectifying the voltage of the second pulse waveform;
A first charging interface connected to the second rectifying unit;
A sampling unit for obtaining voltage sample values and / or current sample values by sampling the voltage and / or current output by the second rectification unit;
Connecting to each of the sampling unit and the switch unit, outputting the control signal to the switch unit, and adjusting a duty ratio of the control signal based on the voltage sample value and / or the current sample value; A control unit that causes the voltage of the third pulse waveform to meet the charging requirement;
And a terminal having a battery and a second charging interface for applying a voltage of the third pulse waveform to the battery when connected to the battery and connected to the first charging interface. The charging system for terminals according to claim 2.   The terminal charging system according to claim 3, wherein the control unit adjusts the frequency of the control signal based on the voltage sample value and / or the current sample value.   4. The apparatus according to claim 3, wherein the control unit is connected to the first charging interface and acquires state information of the terminal by communicating with the terminal through the first charging interface. Charging system for mobile devices.   The system according to claim 5, wherein the control unit adjusts a duty ratio of the control signal based on state information of the terminal, the voltage sample value and / or the current sample value. .   4. The power supply adapter according to claim 3, further comprising: a drive unit connected between the switch unit and the control unit, for driving the switch unit on or off based on the control signal. The charging system for the terminal described in.   The terminal charging system according to claim 7, wherein the power adapter further comprises a separation unit connected between the drive unit and the control unit. The power supply adapter, an auxiliary winding that generates a voltage of a fourth pulse waveform based on the voltage of the first pulse waveform after modulation;
A power supply unit connected to the auxiliary winding, which converts the voltage of the fourth pulse waveform to output a direct current, and which supplies power to each of the drive unit and / or the control unit. The charging system for terminals according to claim 7. The power supply adapter further includes a first voltage detection unit connected to each of the auxiliary winding and the control unit to detect a voltage of the fourth pulse waveform and generate a voltage detection value.
The terminal charging system according to claim 9, wherein the control unit adjusts a duty ratio of the control signal based on the voltage detection value.   The charging system for a terminal according to claim 3, wherein an operating frequency of the transformer is 50 KHz to 2 MHz. A first current sample circuit for obtaining the current sample value by sampling the current output by the second rectification unit;
The terminal charging system according to claim 3, further comprising: a first voltage sample circuit that obtains the voltage sample value by sampling a voltage output by the second rectification unit. A peak voltage sample storage unit that samples and stores a peak voltage of the voltage of the third pulse waveform;
A zero cross sampling unit for sampling the zero cross point of the voltage of the third pulse waveform;
A discharge unit for discharging the voltage of the peak voltage sample storage unit at the zero crossing point;
The terminal charging system according to claim 12, further comprising: an AD sampling unit that acquires the voltage sample value by sampling a peak voltage of the peak voltage sample storage unit.   The charging system for a terminal according to claim 3, wherein the first pulse waveform after the modulation is synchronized with the third pulse waveform.   The power supply adapter samples the voltage of the first pulse waveform, connects to the control unit, and the control unit controls the switch unit if the sampled voltage value is larger than a first predetermined voltage value. The charging system for a terminal according to any one of claims 3 to 14, further comprising a second voltage sample circuit that performs a discharging operation by starting a first set time.   The terminal charging system according to claim 3, wherein the first charging interface comprises a power line for charging the battery and a data line for communicating with the terminal.   The terminal according to claim 16, wherein the control unit determines a charging mode comprising a quick charging mode and a normal charging mode by communicating with the terminal through the first charging interface. Charging system. The power adapter further comprises a series-connected controllable switch and a filter unit connected to a first output terminal of the second rectification unit,
The control unit controls the controllable switch to be turned on when the charge mode is determined to be a normal charge mode, and the controllable switch is turned off when the charge mode is determined to be a rapid charge mode. The charging system for a terminal according to claim 17, wherein control is performed as follows.   The control unit acquires the charging current and / or the charging voltage corresponding to the rapid charging mode based on the state information of the terminal when the charging mode is determined to be the rapid charging mode, and corresponds to the rapid charging mode The terminal charging system according to claim 17, wherein the duty ratio of the control signal is adjusted based on the charging current and / or the charging voltage.   The state information of the terminal includes the temperature of the battery, and when the temperature of the battery is higher than a first predetermined temperature threshold or the temperature of the battery is lower than a second predetermined temperature threshold, the current charging mode is fast charging. 20. The charging system for a terminal according to claim 19, wherein if in mode, a fast charge mode is switched to a normal charge mode and the first predetermined temperature threshold is greater than the second predetermined temperature threshold.   The terminal charging system according to claim 20, wherein the control unit controls the switch unit to be turned off when the temperature of the battery is higher than a predetermined high temperature protection threshold.   The terminal charging system according to claim 3, wherein the control unit controls the switch unit to turn off when the voltage sample value is greater than a second predetermined voltage value.   The terminal charging system according to claim 3, wherein the control unit controls the switch unit to turn off when a current sample value is larger than a predetermined current value.   The terminal charging system according to claim 1, wherein the terminal is a mobile terminal, a mobile power source, a multimedia player, a node personal computer, or a wearable device.   The terminal information according to claim 5, wherein the state information of the terminal includes information of an amount of electricity of the battery, a temperature of the battery, voltage / current of the terminal, interface information of the terminal, and path impedance of the terminal. Charging system for mobile devices.   The terminal further comprises: a controller; and a charge control switch connected between the second charge interface and the battery and turning on or off the battery charging process under control of the controller. The charging system for terminals according to claim 3.   The terminal according to claim 26, further comprising: a communication unit that establishes bi-directional communication between the controller and the control unit by the second charging interface and the first charging interface. Charging system.   When the control unit decides to charge the terminal in the quick charge mode by performing bi-directional communication with the terminal through the data line of the first charge interface, whether to turn on the fast charge mode Sending a first instruction to the terminal to ask the terminal, and receiving from the terminal a response instruction of the first instruction indicating that the terminal agrees to turn on the quick charge mode. The charging system for a terminal according to claim 17.   The control unit charges the terminal with the power adapter in the normal charging mode before sending the first instruction to the terminal, and after confirming that the charging time of the normal charging mode is longer than a predetermined threshold The charging system for a terminal according to claim 28, wherein the first instruction is sent to the terminal.   The control unit controls the switch unit to control the power adapter to adjust the charging current to the charging current corresponding to the quick charging mode, and the power adapter charges the battery according to the rapid charging mode. By performing bi-directional communication with the terminal via the data line of the first charging interface before charging the terminal with current, the charging voltage corresponding to the quick charging mode is determined, and the power adapter is The charging system for a terminal according to claim 28, controlling the charge voltage to a charge voltage corresponding to the quick charge mode.   The control unit performs bi-directional communication with the terminal through the data line of the first charging interface to determine the current output voltage of the power adapter when determining the charging voltage corresponding to the quick charging mode. A second instruction is sent to the terminal to ask if it is appropriate to have the charging voltage in the quick charge mode, and the current output voltage of the power adapter sent by the terminal is appropriate, somewhat higher or lower The terminal according to claim 30, receiving a response instruction of the second instruction to indicate that it is somewhat low, and determining the charging voltage of the quick charge mode based on the response instruction of the second instruction. Charging system for   The control unit performs bi-directional communication with the terminal via the data line of the first charging interface before the power adapter controls the charging current to be adjusted to the charging current corresponding to the fast charging mode. 31. The charging system for a terminal according to claim 30, wherein by doing, the charging current corresponding to the quick charge mode is determined.   The control unit performs bi-directional communication with the terminal via the data line of the first charging interface to determine the charging voltage corresponding to the fast charging mode, the maximum charging currently supported by the terminal Sending a third instruction to the terminal to determine the current, receiving the response instruction of the third instruction sent by the terminal to indicate the maximum charging current currently supported by the terminal; The charging system for a terminal according to claim 32, wherein the charging current of the quick charging mode is determined based on a response instruction of the instruction of. In the process of charging the terminal by the power adapter in the quick charge mode,
The control unit adjusts the charging current output to the battery by the power adapter by controlling the switch unit by performing bidirectional communication with the terminal via the data line of the first charging interface. A charging system for a terminal according to claim 28, characterized in that it continues.   The control unit adjusts the charging current output to the battery by the power adapter by controlling the switch unit by performing bidirectional communication with the terminal via the data line of the first charging interface. In response, a fourth instruction is sent to the terminal to ask for the current voltage of the battery in the terminal, and a response of the fourth instruction sent by the terminal to indicate the current voltage of the battery in the terminal The terminal charging system according to claim 34, wherein the charging current is adjusted by receiving an instruction and controlling the switch unit based on a current voltage of the battery.   The control unit controls the switch unit based on the current voltage of the battery and the correspondence relationship between a predetermined battery voltage value and a charging current value, thereby controlling the switch unit to output the charging current output from the power adapter to the battery. The terminal charging system according to claim 35, wherein the charging current value is adjusted to a current voltage.   In the process of charging the terminal by the power adapter in the quick charge mode, the control unit performs bi-directional communication with the terminal via a data line of the first charging interface to provide It is checked whether there is a contact failure due to the charging interface and the second charging interface, and if it is confirmed that the contact failure exists, the power adapter controls that the quick charge mode is ended. The charging system for a terminal according to claim 34.   The control unit receives information indicating the path impedance of the terminal from the terminal before it is confirmed whether there is a contact failure due to the first charging interface and the second charging interface, Sending a fourth instruction to the terminal to ask for the voltage of the battery in the terminal, receiving a response instruction of the fourth instruction sent by the terminal to indicate the voltage of the battery in the terminal, and The path impedance from the power adapter to the battery is determined based on the output voltage and the voltage of the battery, and the path impedance from the power adapter to the battery, the path impedance of the terminal, and the distance between the power adapter and the terminal Based on the path impedance of the charging circuit Charging system for terminal according to claim 37, characterized in that contact failure by the first charging interface and the second charging interface to see if there.   Before the power adapter exits the quick charge mode, the control unit sends a fifth instruction to the terminal indicating that there is a contact failure due to the first charging interface and the second charging interface. The charging system for a terminal according to claim 37, characterized in that   The terminal supports a normal charging mode and a rapid charging mode, the charging current of the rapid charging mode is larger than the charging current of the normal charging mode, and the controller performs bi-directional communication with the control unit. The power adapter decides to charge the terminal in the quick charge mode, the control unit controls the power adapter to output with a charging current corresponding to the quick charge mode, and the battery in the terminal is The charging system for a terminal according to claim 27, characterized by charging.   The controller receives a first instruction sent from the control unit to ask whether the terminal turns on the fast charge mode, and agrees that the terminal turns on the fast charge mode 41. The charging system for a terminal according to claim 40, further comprising: sending a response instruction of a first instruction to indicate to the control unit.   Before the controller receives a first instruction sent by the control unit, charging of the terminal by the power adapter is performed in the normal charging mode, the control unit in the normal charging mode. 42. The charging system for a terminal according to claim 41, wherein the controller receives the first instruction sent by the control unit after confirming that the charging time is longer than a predetermined threshold.   The power adapter performs bi-directional communication between the controller and the control unit before outputting the charging current corresponding to the quick charge mode to charge the battery in the terminal. The charging system for a terminal according to claim 40, wherein a charging voltage corresponding to the fast charging mode is determined.   The controller receives a second instruction sent by the control unit to inquire about whether it is appropriate for the current output voltage of the power adapter to be the charging voltage for the quick charge mode, and 44. The charging system for a terminal according to claim 43, wherein a response instruction of a second instruction indicating that the current output voltage is appropriate, slightly higher or slightly lower is sent to the control unit.   The terminal charging system according to claim 43, wherein the power adapter sets a charging current corresponding to the rapid charging mode by bi-directional communication between the controller and the control unit.   The controller receives a third instruction sent by the control unit to inquire about the maximum charging current currently supported by the terminal and a third instruction indicating the maximum charging current currently supported by the terminal. 46. The charging system for a terminal according to claim 45, wherein the power supply adapter determines a charging current corresponding to the fast charging mode based on the maximum charging current by sending a response instruction to the control unit. .   In the process of charging the terminal by the power adapter in the quick charge mode, the power adapter continues to adjust the charge current output to the battery by the controller and the control unit performing bi-directional communication 42. A charging system for a terminal as claimed in claim 41.   The controller receives a fourth instruction sent from the control unit for inquiring the current voltage of the battery in the terminal, and responds to the fourth instruction indicating the current voltage of the battery in the terminal. 42. The charging system for a terminal according to claim 41, wherein the power supply adapter continues adjusting the charging current output to the battery by itself based on the current voltage of the battery by sending to the control unit.   In the process of charging the terminal by the power adapter in the quick charge mode, the controller and the control unit perform bi-directional communication such that the power adapter includes the first charge interface and the second charge. The charging system for a terminal according to claim 43, wherein it is confirmed whether there is a contact failure by the interface.   The controller receives a fourth instruction sent by the control unit for inquiring the current voltage of the battery in the terminal, and responds to the fourth instruction indicating the current voltage of the battery in the terminal. By sending to the control unit, the control unit determines, based on the output voltage of the power adapter and the current voltage of the battery, whether there is contact failure due to the first charging interface and the second charging interface. 50. A charging system for a terminal according to claim 49, characterized in that it is verified.   51. The terminal of claim 50, wherein the controller receives a fifth instruction sent by the control unit to indicate contact failure due to the first charging interface and the second charging interface. Charging system for   The control unit obtains the temperature of the first charge interface, and controls the switch unit to be turned off when the temperature of the first charge interface is higher than a predetermined protection temperature. The charging system for terminals according to Item 21.   The controller performs bi-directional communication with the control unit to obtain the voltage sample value, and controls the charge control switch to be turned off when the voltage sample value is larger than a second predetermined voltage value. The charging system for a terminal according to claim 27, characterized in that:   The controller acquires the current sample value by performing bidirectional communication with the control unit, and controls the charge control switch to be turned off when the current sample value is larger than a set current value. 28. A charging system for a terminal according to claim 27, characterized in that:   The controller acquires the temperature of the first charging interface by performing bi-directional communication with the control unit, and the charge control switch is turned off when the temperature of the first charging interface is higher than a predetermined protection temperature. The charging system for a terminal according to claim 27, wherein control is performed as follows.   The terminal according to claim 26, wherein the controller acquires the temperature of the battery and controls the charge control switch to be turned off when the temperature of the battery is higher than a predetermined high temperature protection threshold. Charging system. A first rectification unit that outputs a voltage of a first pulse waveform by rectifying the input alternating current in the charging process;
A switch unit and a transformer for generating an output voltage of the power supply adapter by receiving the voltage of the first pulse waveform outputted by the first rectification unit and coupling it to the next stage; Power adapter.   The switch unit modulates the voltage of the first pulse waveform based on a control signal, and the transformer specifically modulates the voltage of the second pulse waveform based on the voltage of the first pulse waveform after modulation. The power supply adapter according to claim 57, wherein the power supply is output. A second rectification unit that rectifies the voltage of the second pulse waveform and outputs a voltage of a third pulse waveform;
When connected to the second rectification unit and connected to a second charging interface connected to the battery in the terminal, the second charging interface applies a voltage of the third pulse waveform to the battery of the terminal First charging interface,
A sampling unit for obtaining voltage sample values and / or current sample values by sampling the voltage and / or current output by the second rectification unit;
By connecting to each of the sampling unit and the switch unit, outputting the control signal to the switch unit, and adjusting the duty ratio of the control signal based on the voltage sample value and / or the current sample value, 59. A power adapter according to claim 58, further comprising: a control unit for causing the voltage of the third pulse waveform to satisfy a charge requirement.   60. A power adapter according to claim 59, wherein the control unit adjusts the frequency of the control signal based on the voltage and / or current sample values.   60. The apparatus according to claim 59, wherein the control unit acquires state information of the terminal by connecting to the first charging interface and communicating with the terminal through the first charging interface. Power adapter listed.   The power adapter according to claim 61, wherein the control unit adjusts a duty ratio of the control signal based on state information of the terminal, the voltage sample value and / or the current sample value.   58. The power adapter according to claim 57, further comprising a drive unit connected between the switch unit and the control unit and driving on or off of the switch unit based on the control signal.   The power adapter according to claim 63, further comprising: a separation unit connected between the drive unit and the control unit. An auxiliary winding that generates a voltage of a fourth pulse waveform based on the voltage of the first pulse waveform after modulation;
A power supply unit connected to the auxiliary winding, which converts the voltage of the fourth pulse waveform to output a direct current, and which supplies power to each of the drive unit and / or the control unit. 58. The power adapter of claim 57. And a first voltage detection unit connected to each of the auxiliary winding and the control unit to detect a voltage of the fourth pulse waveform and generate a voltage detection value.
The power adapter according to claim 65, wherein the control unit adjusts a duty ratio of the control signal based on the voltage detection value.   The power adapter according to claim 57, wherein an operating frequency of the transformer is 50 KHz to 2 MHz. A first current sample circuit for obtaining the current sample value by sampling the current output by the second rectification unit;
58. The power adapter of claim 57, further comprising: a first voltage sample circuit for obtaining the voltage sample value by sampling a voltage output by the second rectification unit. A peak voltage sample storage unit that samples and stores a peak voltage of the voltage of the third pulse waveform;
A zero cross sampling unit for sampling the zero cross point of the voltage of the third pulse waveform;
A discharge unit for discharging the voltage of the peak voltage sample storage unit at the zero crossing point;
69. The power adapter of claim 68, further comprising: an AD sampling unit configured to obtain the voltage sample values by sampling peak voltages of the peak voltage sample storage unit.   58. The power adapter according to claim 57, wherein the first pulse waveform after modulation is synchronous with the third pulse waveform.   The voltage of the first pulse waveform is sampled, connected to the control unit, and the control unit controls the switch unit when the sampled voltage value is larger than a first predetermined voltage value. The power supply adapter according to any one of claims 57 to 70, further comprising a second voltage sample circuit that performs a discharge operation by starting a predetermined time of the second.   58. The power adapter of claim 57, wherein the first charging interface comprises a power line for charging the battery and a data line for communicating with the terminal.   73. The power adapter of claim 72, wherein the control unit communicates with the terminal through the first charging interface to determine a charging mode including a quick charging mode and a normal charging mode. It further comprises a series-connected controllable switch and a filter unit connected to the first output terminal of the second rectification unit,
The control unit controls turning on the controllable switch when the charge mode is determined to be a normal charge mode, and turns off the controllable switch when the charge mode is determined to be a rapid charge mode. 74. A power adapter according to claim 73, characterized in that it controls.   The control unit acquires a charging current and / or a charging voltage corresponding to the rapid charging mode based on the state information of the terminal when the charging mode is determined to the rapid charging mode, and sets the rapid charging mode to the rapid charging mode. 74. The power adapter of claim 73, wherein the duty ratio of the control signal is adjusted based on corresponding charging current and / or charging voltage.   The state information of the terminal includes battery temperature, and the current charging mode is rapid if the battery temperature is higher than a first predetermined temperature threshold or the battery temperature is lower than a second predetermined temperature threshold. 76. A power adapter according to claim 75, wherein if in charging mode, the rapid charging mode is switched to a normal charging mode and the first predetermined temperature threshold is greater than the second predetermined temperature threshold.   The power adapter according to claim 76, wherein the control unit controls turning off the switch unit when the temperature of the battery is higher than a predetermined high temperature protection threshold.   58. The power adapter of claim 57, wherein the control unit controls turning off the switch unit if the voltage sample value is greater than a second predetermined voltage value.   58. The power adapter of claim 57, wherein the control unit controls turning off the switch unit when the current sample value is larger than a set current value.   The apparatus according to claim 61, wherein the state information of the terminal includes information of an amount of electricity of the battery, a temperature of the battery, a voltage / current of the terminal, interface information of the terminal, and a path impedance of the terminal. Power adapter.   The control unit turns on the quick charge mode when it is decided to charge the terminal in the quick charge mode by performing two-way communication with the terminal through the data line of the first charge interface. Send a first instruction to the terminal to ask the terminal whether or not to do, and receive from the terminal a response instruction of the first instruction indicating that the terminal agrees to turn on the quick charge mode. 74. A power adapter according to claim 73, characterized in that.   The control unit charges the terminal with the power adapter in the normal charging mode before sending the first instruction to the terminal, and after confirming that the charging time of the normal charging mode is longer than a predetermined threshold 82. The power adapter of claim 81, wherein the first instruction is sent to the terminal.   The control unit controls the switch unit to control the power supply adapter to adjust the charging current to the charging current corresponding to the rapid charging mode, and the power adapter corresponds to the charging current corresponding to the rapid charging mode. Before charging the terminal by bi-directional communication with the terminal via the data line of the first charging interface to determine the charging voltage corresponding to the rapid charging mode, the power adapter charging voltage 82. The power adapter according to claim 81, which controls the adjustment of the voltage to a charging voltage corresponding to the quick charging mode.   The control unit performs bi-directional communication with the terminal through the data line of the first charging interface to determine the current output of the power adapter when the charging voltage corresponding to the rapid charging mode is determined. A second instruction is sent to the terminal asking whether it is appropriate to bring the voltage to the charging voltage of the fast charge mode, the current output voltage of the power adapter sent from the terminal is appropriate, somewhat high or slightly The method of claim 83, further comprising: receiving a response instruction of a second instruction to indicate low, and determining a charging voltage of the fast charge mode based on the response instruction of the second instruction. Power adapter.   The control unit performs bi-directional communication with the terminal via the data line of the first charging interface before the power adapter controls the charging current to be adjusted to the charging current corresponding to the fast charging mode. 84. The power adapter of claim 83, wherein said determining determines a charge current corresponding to said fast charge mode.   The control unit performs bi-directional communication with the terminal via the data line of the first charging interface to determine the charging current corresponding to the fast charging mode, the largest currently supported by the terminal. Sending a third instruction to the terminal to ask for charging current, receiving a response instruction of the third instruction sent by the terminal to indicate the maximum charging current currently supported by the terminal; 86. The power adapter of claim 85, wherein the charge current of the quick charge mode is determined based on response instructions of three instructions. In the process of charging the terminal by the power adapter in the quick charge mode,
The control unit adjusts the charging current output to the battery by the power adapter by controlling the switch unit by performing bidirectional communication with the terminal via the data line of the first charging interface. 82. A power adapter according to claim 81, characterized in that it continues.   The control unit adjusts the charging current output to the battery by the power adapter by controlling the switch unit by performing bidirectional communication with the terminal via the data line of the first charging interface. In response, a fourth instruction is sent to the terminal to ask for the current voltage of the battery in the terminal, and a response of the fourth instruction sent by the terminal to indicate the current voltage of the battery in the terminal 90. The power adapter of claim 87, receiving instructions and adjusting the charging current by controlling the switch unit based on a current voltage of the battery.   The control unit controls the switch unit based on the correspondence between the current voltage of the battery and the voltage value of the predetermined battery and the charging current value, thereby controlling the switch unit to output the charging current output from the power adapter to the battery. 89. The power adapter of claim 88, wherein the power adapter is adjusted to a charging current value corresponding to a current voltage.   In the process of charging the terminal by the power adapter in the quick charge mode, the control unit performs bi-directional communication with the terminal via a data line of the first charging interface to provide It is checked whether there is a contact failure due to the charging interface and the second charging interface, and if it is confirmed that the contact failure exists, the power adapter controls that the quick charge mode is ended. 89. A power adapter according to claim 87.   The control unit receives information indicating the path impedance of the terminal from the terminal before it is confirmed whether there is a contact failure due to the first charging interface and the second charging interface, Sending a fourth instruction to the terminal to ask for the voltage of the battery in the terminal, receiving a response instruction of the fourth instruction sent by the terminal to indicate the voltage of the battery in the terminal, and The path impedance from the power adapter to the battery is determined based on the output voltage and the voltage of the battery, and the path impedance from the power adapter to the battery, the path impedance of the terminal, and between the power adapter and the terminal Based on the path impedance of the charging circuit Serial first charging interface and the second power supply adapter according to claim 90, characterized in that to determine whether contact failure exists due to the charging interface.   Before the power adapter exits the quick charge mode, the control unit may execute a fifth instruction to indicate that a contact failure due to the first charging interface and the second charging interface is present. 92. A power adapter according to claim 91, characterized in that it is sent to.   The control unit obtains the temperature of the first charging interface, and controls turning off the switch unit if the temperature of the first charging interface is higher than a predetermined protection temperature. The power adapter according to Item 77. Rectifying the input alternating current and outputting a voltage of a first pulse waveform in the charging process;
Generating an output voltage of the power supply adapter by receiving the voltage of the first pulse waveform output by the first rectification unit and coupling it to the next stage. Charging method. The rectifying of the input alternating current to output the voltage of the first pulse waveform is performed when the first charging interface of the power adapter and the second charging interface of the terminal are connected. Primary rectification of alternating current to output a voltage of a first pulse waveform,
Receiving the voltage of the first pulse waveform outputted by the first rectification unit and coupling it to the next stage modulates the voltage of the first pulse waveform by the control switch unit, and converts the voltage by the transformer. The terminal charging method according to claim 94, wherein a voltage of two pulse waveforms is output. And secondly rectifying the voltage of the second pulse waveform to output a voltage of a third pulse waveform, and applying the voltage of the third pulse waveform to the battery of the terminal by the second charging interface. ,
Obtaining voltage sample values and / or current sample values by sampling the voltage and / or current after secondary rectification;
Adjusting the voltage of the third pulse waveform to meet the charging requirement by adjusting the duty ratio of the control signal controlling the switch unit based on the voltage ampule value and / or the current sample value. 96. A method of charging for a terminal according to claim 95, comprising.   97. A method of charging for a terminal according to claim 96, wherein the frequency of said control signal is adjusted based on said voltage sample value and / or current sample value.   By communicating with the terminal through the first charging interface, status information of the terminal is obtained, and based on the status information of the terminal, the voltage sample value and / or the current sample value, the control 97. The method of claim 96, further comprising adjusting a duty ratio of the unit.   A voltage of a fourth pulse waveform is generated by conversion by the transformer, a voltage of the fourth pulse waveform is detected to generate a voltage detection value, and a duty ratio of the control signal is adjusted based on the voltage detection value. 97. A method of charging for a terminal according to claim 96, wherein:   In sampling the voltage after the secondary rectification to obtain a voltage sample value, the peak voltage of the voltage after the secondary rectification is sampled and stored, and the zero cross point of the voltage after the secondary rectification Sampling, storing the peak voltage at the zero crossing point and discharging the voltage of a peak voltage sample storage unit storing the peak voltage, and sampling the peak voltage of the peak voltage sample storage unit. 97. A method of charging for a terminal as recited in claim 96 including obtaining a value.   The voltage of the first pulse waveform is sampled, and when the sampled voltage value is larger than the first predetermined voltage value, the switch unit is controlled to start the first set time to perform the discharging operation. 97. A charging method for a terminal according to claim 96.   By communicating with the terminal through the first charging interface, a charging mode including a fast charging mode and a normal charging mode is determined, and when the charging mode is determined to be a fast charging mode, the state of the terminal Based on the information, a charge current and / or a charge voltage corresponding to the quick charge mode is obtained, and a duty ratio of the control signal is adjusted based on the charge current and / or the charge voltage corresponding to the quick charge mode. 97. A method of charging for a terminal according to claim 96, characterized in that:   The state information of the terminal includes the temperature of the battery, and when the temperature of the battery is higher than a first predetermined temperature threshold or the temperature of the battery is lower than a second predetermined temperature threshold, the current charge mode is 103. A charge for a terminal according to claim 102, wherein in the case of a fast charge mode, the fast charge mode is switched to a normal charge mode and the first predetermined temperature threshold is greater than the second predetermined temperature threshold. Method.   104. The method of claim 103, further comprising: controlling the switch unit to be turned off when the temperature of the battery is higher than a predetermined high temperature protection threshold.   97. The method of claim 96, further comprising controlling the switch unit to be turned off when the voltage sample value is greater than a second predetermined voltage value.   97. The method of claim 96, further comprising controlling the switch unit to be turned off when the current sample value is greater than a predetermined current value.   The state information of the terminal includes information of an amount of electricity of the battery, a temperature of the battery, a voltage / current of the terminal, interface information of the terminal, and a path impedance of the terminal. Charging method for the terminal of.   When the power adapter decides to charge the terminal in the quick charge mode by performing bi-directional communication with the terminal through the first charge interface, whether to turn on the quick charge mode or not Sending a first instruction to the terminal to query the terminal, and receiving from the terminal a response instruction of the first instruction indicating that the terminal agrees to turn on the fast charge mode. A charging method for a terminal according to claim 102.   The power adapter charges the terminal in a normal charging mode before sending the first instruction to the terminal, and after confirming that the charging time of the normal charging mode is longer than a predetermined threshold, the first power adapter 109. The method for charging a terminal according to claim 108, comprising sending an instruction to the terminal.   By controlling the switch unit, the power adapter controls the charge current to be adjusted to the charge current corresponding to the quick charge mode, and the power adapter uses the charge current corresponding to the quick charge mode to control the terminal. By performing bi-directional communication with the terminal through the first charging interface prior to charging, a charging voltage corresponding to the rapid charging mode is determined, and the power adapter sets the charging voltage to the rapid charging mode. 109. The method of charging for a terminal according to claim 108, comprising controlling adjusting to a corresponding charging voltage.   In order to determine the charge voltage corresponding to the quick charge mode by performing two-way communication with the terminal through the first charge interface, the power adapter may be configured such that its current output voltage is in the fast charge mode. Sending a second instruction to the terminal to ask if it is appropriate to be charged voltage, the current output voltage of the power adapter sent from the terminal is appropriate, somewhat higher or slightly lower 110. The method according to claim 110, further comprising: receiving a response instruction of a second instruction indicating a second instruction, and determining a charging voltage of the quick charge mode based on the response instruction of the second instruction. How to charge for the terminal.   The power adapter supports the quick charge mode by performing bi-directional communication with the terminal via the first charge interface before adjusting the charge current to the charge current corresponding to the quick charge mode. 110. The method of claim 110, further comprising determining a charging current.   Determining a charging current corresponding to the fast charging mode by performing bi-directional communication with the terminal through the first charging interface is a third step for asking for the maximum charging current currently supported by the terminal. Sending an instruction to the terminal, receiving an answer instruction of the third instruction sent by the terminal to indicate the maximum charging current currently supported by the terminal, and of the third instruction. 113. A method of charging for a terminal as recited in claim 112 including determining a charging current for said rapid charging mode based on a response instruction.   In the quick charge mode, in the process of charging the terminal by the power adapter, the switch unit is controlled by performing bi-directional communication with the terminal via the first charging interface, from the power adapter 109. The method for charging a terminal according to claim 108, wherein the charge current output to the battery is continuously adjusted.   Continuing to adjust the charging current output from the power adapter to the battery by controlling the switch unit by performing bi-directional communication with the terminal via the first charging interface Sending a fourth instruction to the terminal to ask for the current voltage of the terminal; receiving a response instruction of the fourth instruction sent from the terminal to indicate the current voltage of the battery in the terminal; 115. The method of claim 114, further comprising: adjusting the charging current by controlling the switch unit based on a current voltage of the battery.   Adjusting the charging current by controlling the switch unit based on the current voltage of the battery is based on the correspondence between the current voltage of the battery and a predetermined battery voltage value and the charging current value. The charging for the terminal according to claim 115 including controlling the unit to adjust the charging current outputted to the battery by the power adapter to the charging current value corresponding to the current voltage of the battery. Method.   In the process of charging the terminal by the power adapter in the quick charge mode, the first charging interface and the second charging are performed by performing two-way communication with the terminal through the first charging interface. The terminal according to claim 114, wherein it is confirmed whether there is a contact failure due to an interface, and if it is confirmed that the contact failure is present, the power adapter controls the termination of the quick charge mode. Charging method for   The power adapter receives, from the terminal, information indicating a path impedance of the terminal before it is confirmed whether there is a contact failure due to the first charging interface and the second charging interface. Sending a fourth instruction to the terminal to ask for the voltage of the battery in the terminal, receiving a response instruction of the fourth instruction sent from the terminal indicating the voltage of the battery in the terminal, and outputting the output voltage of the power adapter And the passage impedance from the power adapter to the battery is determined based on the voltage of the battery, and the passage impedance from the power adapter to the battery, the passage impedance of the terminal, and the charge between the power adapter and the terminal Said first based on the path impedance of the circuit Charging method for terminal according to claim 117, characterized in that to determine whether a contact failure by the second charging interface and the charging interface exists.   Sending a fifth instruction to the terminal indicating that there is a contact failure due to the first charging interface and the second charging interface before controlling the power adapter to exit the rapid charging mode The charging method for a terminal according to claim 117, characterized in that:   The terminal supports a normal charging mode and a rapid charging mode, and the power adapter charges the terminal in the rapid charging mode by performing bi-directional communication with the power adapter through the second charging interface. The charging current of the quick charging mode is larger than the charging current of the normal charging mode, and the power adapter outputs the charging current corresponding to the quick charging mode to charge the battery in the terminal. 97. A method of charging for a terminal according to claim 96, characterized in that:   The terminal decides to charge the terminal in the quick charge mode by performing bidirectional communication with the power adapter through the second charging interface, the power adapter sending from the power adapter To indicate that the terminal has received a first instruction to ask if the fast charge mode should be turned on and that the terminal agrees to turn on the fast charge mode. 121. A method of charging for a terminal as recited in claim 120, comprising sending a first instruction response instruction to said power adapter.   The terminal charges the terminal with the power adapter in the normal charging mode before receiving the first instruction sent from the power adapter, and the power adapter charges time in the normal charging mode 124. The method of claim 121, wherein the terminal receives the first instruction sent from the power adapter after confirming that it is greater than a predetermined threshold.   The power adapter performs bi-directional communication with the power adapter via the second charging interface before charging the battery in the terminal by outputting the charging current corresponding to the quick charge mode. The terminal charging method according to claim 121, wherein the power adapter determines a charging voltage corresponding to the rapid charging mode by performing communication.   The terminal determines bidirectionally the charging voltage corresponding to the quick charging mode by performing bi-directional communication with the power adapter through the second charging interface. Receiving a second instruction to inquire if the current output voltage of the power adapter is appropriate to be the charging voltage of the fast charge mode, and the terminal outputs the current output voltage of the power adapter 124. A method of charging for a terminal as recited in claim 123 including sending a second instruction response instruction to the power adapter to indicate appropriate, somewhat higher or slightly lower.   The terminal receives a charging current corresponding to the quick charge mode from the power adapter, and performs bi-directional communication with the power adapter via the second charging interface before charging a battery in the terminal. 124. The method of claim 123, wherein the power adapter determines a charge current corresponding to the fast charge mode.   The terminal determines bidirectionally the charging current corresponding to the quick charging mode by performing bi-directional communication with the power adapter through the second charging interface. Receiving a third instruction to ask for the maximum charging current that the terminal currently supports, and the power instruction responsive to the third instruction to indicate the maximum charging current that the terminal currently supports 126. The method of charging for a terminal according to claim 125, further comprising: by sending to an adapter, the power adapter determines the charging current corresponding to the fast charge mode based on the maximum charging current. .   In the process of charging the terminal by the power adapter in the quick charge mode, the power adapter performs bi-directional communication with the power adapter through the second charging interface so that the power adapter 124. The method of charging for a terminal according to claim 121, wherein the charge current output to the battery is continuously adjusted.   It is sent from the power adapter that the terminal continues to adjust the charging current output from the power adapter to the battery by performing bidirectional communication with the power adapter through the second charging interface. Receiving a fourth instruction to ask for the current voltage of the battery in the terminal, and indicating the current voltage of the battery in the terminal, based on the current voltage of the battery, from the power adapter to the battery The method for charging a terminal according to claim 127, further comprising: sending a response instruction of a fourth instruction that continues adjusting the output charging current to the adapter.   In the process of charging the terminal by the power adapter in the quick charge mode, the terminal performs bi-directional communication with the power adapter through the second charging interface, whereby the power adapter is configured to 124. The method of claim 123, further comprising: checking if there is contact failure due to one charging interface and the second charging interface.   The terminal performs bi-directional communication with the power adapter via the second charging interface to determine whether the power adapter has a contact failure due to the first charging interface and the second charging interface. Confirming the receiving of the fourth instruction sent from the power adapter to inquire the current voltage of the battery in the terminal, and the terminal indicates the current voltage of the battery in the terminal By sending a fourth instruction to the power adapter, the power adapter causes a contact failure between the first charging interface and the second charging interface based on the output voltage of the power adapter and the current voltage of the battery. Claim to include checking if there is a Charging method for terminal according to 29.   130. The terminal according to claim 129, wherein the terminal receives a fifth instruction sent from the power adapter to indicate contact failure due to the first charging interface and the second charging interface. Charging method for   The method according to claim 1, further comprising: obtaining the temperature of the first charging interface, and controlling turning on the switch unit if the temperature of the first charging interface is higher than a predetermined protection temperature. The charging method for terminals as described in 104.   The terminal acquires the voltage sample value by performing bi-directional communication with the power adapter through the second charging interface, and the battery is selected when the voltage sample value is greater than a second predetermined voltage value. 97. A method of charging for a terminal according to claim 96, comprising controlling stopping charging to the terminal.   The terminal acquires the current sample value by performing bidirectional communication with the power adapter through the second charging interface, and charging the battery when the current sample value is larger than a predetermined current value. 97. The method of claim 96, further comprising: controlling stopping.   The terminal acquires the temperature of the first charging interface by performing bidirectional communication with the power adapter via the second charging interface, and the temperature of the first charging interface is greater than a predetermined protection temperature. The charging method for a terminal according to claim 96, characterized by controlling stopping the charge to the battery when it is high.   The terminal according to claim 96, wherein the terminal acquires the temperature of the battery, and controls stopping charging of the battery if the temperature of the battery is higher than a predetermined high temperature protection threshold. Charging method.